A local force field modulation device and method based on multi-particle coherent rotation

Abstract

This application discloses a local force field modulation device based on multi-particle coherent rotation, comprising: a particle confinement and preparation unit for confining selected particles and cooling them to their quantum ground state in an ultra-high vacuum environment to generate a particle ensemble with a defined initial quantum state; a coherent driving unit for generating an alternating electromagnetic field to drive the particle ensemble into a macroscopic coherent rotation state; and a precision detection unit disposed in the vicinity of the particle ensemble for real-time monitoring of local force field changes caused by the particle ensemble entering the macroscopic coherent rotation state. Thus, this application proposes for the first time the use of artificially induced macroscopic coherent particle rotation as a physical mechanism for force field modulation. Under optimal conditions, the expected local force field anomaly can reach 10⁻⁹ to 10⁻⁶. By flexibly adjusting the driving field, the switching control and intensity adjustment of the force field modulation effect can be achieved. This device is highly compatible with existing equipment.

Description

Technical Field

[0001] This application relates to the fields of quantum control, condensed matter physics and advanced propulsion, specifically to a local force field modulation device and method based on multi-particle coherent rotation. Background Technology

[0002] Currently, the active manipulation of fundamental interactions such as gravity remains one of the ultimate challenges in physics and engineering. Traditionally, gravity is considered to be solely related to the rest mass of an object and cannot be effectively modulated artificially on a laboratory scale. Although existing technologies such as ion traps and magnetic confinement devices can precisely manipulate charged particles, their applications are mainly limited to fields such as quantum computing and spectroscopy. No one has yet proposed using the collective coherent motion of particle systems as a direct means of generating novel force fields.

[0003] Therefore, developing a new method that can artificially stimulate and observe local force field anomalies has significant scientific importance and potential application value. Summary of the Invention

[0004] This application aims to provide a device and method for actively modulating local force fields based on macroscopic coherent rotation of a multi-particle system, overcoming the shortcomings of existing technologies that cannot effectively control fundamental force fields on a laboratory scale.

[0005] This application is based on the following physical principles:

[0006] When a macroscopic system composed of charged or magnetically momentous particles (atoms, ions, molecules) enters a highly coherent collective rotational state under the drive of an external alternating electromagnetic field, a specific component of its energy-momentum tensor will be significantly amplified, thereby generating a detectable static or quasi-static force field anomaly (such as a change in local gravitational acceleration) in the vicinity of the system.

[0007] To this end, this application discloses a local force field modulation device based on multi-particle coherent rotation, comprising:

[0008] The particle confinement and preparation unit is used to confine selected particles and cool them to their quantum ground state in an ultra-high vacuum environment to generate a particle ensemble with a defined initial quantum state.

[0009] A coherent driving unit is used to generate an alternating electromagnetic field to drive the particle ensemble into a macroscopic coherent rotational state.

[0010] A precision detection unit is located in the adjacent space of the particle ensemble to monitor in real time the changes in the local force field caused by the particle ensemble entering a macroscopic coherent rotational state.

[0011] In addition, the local force field modulation device based on multi-particle coherent rotation disclosed in this application may also have the following additional technical features:

[0012] Furthermore, the selected particles include, but are not limited to: alkaline earth metal particles, lanthanide ions, and linear triatomic molecules.

[0013] Furthermore, if the selected particle is a charged particle, the coherent driving unit generates a rotating electric field or a circularly polarized microwave field; if the selected particle is a neutral atom or molecule, the coherent driving unit generates a Raman light field or an alternating gradient magnetic field.

[0014] Furthermore, the precision detection unit includes, but is not limited to, an atomic interferometer gravimeter, a superconducting quantum interferometer, or a high-precision inertial sensor.

[0015] Furthermore, the local force field modulation device based on multi-particle coherent rotation also includes:

[0016] An optical resonant cavity is disposed around the particle ensemble.

[0017] Furthermore, when the precision detection unit monitors the local force field changes caused by the particle ensemble entering the macroscopic coherent rotation state in real time, it uses correlation measurement technology to perform coincidence analysis on the signals from multiple detection points.

[0018] Furthermore, this application discloses another aspect of a local force field modulation method based on multi-particle coherent rotation, comprising the following steps:

[0019] S1: Prepare a macroscopic ensemble composed of the selected particles. In an ultra-high vacuum environment, the temperature of the particles is reduced to below millikelvin by laser cooling and ion trap technology through the particle confinement and preparation unit, so that they are in a defined initial quantum state to generate the particle ensemble.

[0020] S2: By adjusting the output frequency and phase of the coherent driving unit, it resonates with a certain intrinsic rotation mode of the particle ensemble, thereby driving the particle ensemble into a macroscopic coherent rotation state.

[0021] S3: While step S2 is being performed, the precision detection unit is used to collect the local force field changes in the vicinity of the particle ensemble in real time, and to record whether repeatable abnormal signal peaks exceeding the background noise appear during the drive frequency scanning process.

[0022] S4: Based on the output of step S3, adjust the driving parameters. The coherent driving unit adjusts the coherence and stability of the macroscopic coherent rotation state based on the adjusted driving parameters to achieve the maximum intensity of the force field modulation effect.

[0023] The local force field modulation device and method based on multi-particle coherent rotation disclosed in this application have at least the following beneficial effects:

[0024] (1) A novel technical approach: For the first time, it is proposed to use artificially induced macroscopic coherent rotation of particles as a physical mechanism for force field modulation, providing a novel and feasible solution based on existing technologies for long-standing unresolved issues such as gravitational control;

[0025] (2) Detectable effect: Based on the parameters of existing large ion traps or cold atom experimental devices, the magnitude of the expected local force field anomaly under optimal conditions is estimated. ) can be reached to The magnitude is already within the detection range of the most precise atomic interferometers currently available;

[0026] (3) Adjustable parameters: By flexibly adjusting the frequency, intensity and polarization of the driving field, the switching control and intensity adjustment of the force field modulation effect can be realized, providing a foundation for subsequent technical applications;

[0027] (4) Platform compatibility: The device is highly compatible with existing cold atom physics and quantum computing platforms, without the need to develop entirely new extreme condition devices, and has high engineering feasibility.

[0028] Additional features and advantages of this application will be set forth in the description below, or may be learned through practice of this application. Attached Figure Description

[0029] The technical solution and beneficial effects of this application will become apparent and easily understood from the following description in conjunction with the accompanying drawings, wherein:

[0030] Figure 1 This is a system architecture diagram of the local force field modulation device based on multi-particle coherent rotation of this application. Detailed Implementation

[0031] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0032] The local force field modulation device and method based on multi-particle coherent rotation disclosed in this application will now be described with reference to the accompanying drawings.

[0033] like Figure 1 As shown, a local force field modulation device based on multi-particle coherent rotation includes:

[0034] The particle confinement and preparation unit is used to confine selected particles and cool them to their quantum ground state in an ultra-high vacuum environment to generate a particle ensemble with a defined initial quantum state.

[0035] The coherent driving unit is used to generate an alternating electromagnetic field to drive the particle ensemble into a macroscopic coherent rotational state.

[0036] The precision detection unit, located in the vicinity of the particle ensemble, is used to monitor in real time the changes in the local force field caused by the particle ensemble entering a macroscopic coherent rotational state.

[0037] Selected particles, including but not limited to: alkaline earth metal particles ( ), lanthanide ions ( ) and linear triatomic molecules (hydrogen iodide) Hydrogen bromide ).

[0038] If the selected particle is a charged particle, the coherent driving unit generates a rotating electric field or a circularly polarized microwave field; if the selected particle is a neutral atom or molecule, the coherent driving unit generates a Raman light field or an alternating gradient magnetic field.

[0039] Precision detection units include, but are not limited to: atomic interferometer gravimeters, superconducting quantum interference devices, or high-precision inertial sensors.

[0040] The local force field modulation device based on multi-particle coherent rotation also includes:

[0041] An optical resonant cavity is positioned around the particle ensemble.

[0042] When the precision detection unit monitors the local force field changes caused by the particle ensemble entering the macroscopic coherent rotation state in real time, the correlation measurement technique is used to perform coincidence analysis on the signals from multiple detection points.

[0043] The local force field modulation method based on multi-particle coherent rotation includes the following steps:

[0044] S1: Prepare a macroscopic ensemble composed of selected particles. By using particle confinement and preparation units in an ultra-high vacuum environment, the temperature of the particles is reduced to below millikelvin based on laser cooling and ion trap technology, so that they are in a determined initial quantum state to generate a particle ensemble.

[0045] S2: By adjusting the output frequency and phase of the coherent driving unit, it resonates with a certain intrinsic rotation mode of the particle ensemble, thereby driving the particle ensemble into a macroscopic coherent rotation state.

[0046] S3: While step S2 is being performed, the local force field changes in the vicinity of the particle ensemble are collected in real time using a precision detection unit, and it is recorded whether repeatable abnormal signal peaks exceeding the background noise appear during the drive frequency scanning process.

[0047] S4: Based on the output of step S3, the adjustment driving parameters are generated. The coherent driving unit adjusts the coherence and stability of the macroscopic coherent rotation state based on the adjustment driving parameters to achieve the maximum intensity of the force field modulation effect.

[0048] Example 1

[0049] This embodiment is based on one-dimensional rotation of heavy-ion crystals, specifically:

[0050] Apparatus: This embodiment employs a linear ion trap to trap approximately 100 ions. Ions are cooled by laser to form a one-dimensional ionic crystal (coulomb crystal).

[0051] Drive: An orthogonal alternating voltage with an adjustable frequency (1 to 100 MHz) is applied to the electrodes of the ion trap to generate a rotating electric field, which drives the entire ion crystal to rotate around its axis.

[0052] Detection: A cold atom interferometer gravimeter is deployed approximately 1 millimeter directly above the ion crystal to monitor the absolute value change of gravitational acceleration in real time.

[0053] Results: When the frequency of the rotating electric field resonates with a certain integral rotating eigenmode of the ionic crystal, a very narrow and repeatable acceleration variation peak is observed on the gravimeter.

[0054] Example 2

[0055] This embodiment is based on the collective precession of polar molecules, specifically:

[0056] Apparatus: Electrostatic focusing and laser cooling techniques were used to fabricate and trap approximately [amount missing]. The one in the lowest rotational energy state Molecular (cyanogen iodide) gas.

[0057] Driven by applying a circularly polarized terahertz pulse that resonates with the rotational transition of the molecule, the molecule is excited to a high rotational energy level, and a second long pulse is used to drive all the excited molecules to achieve phase-locked collective precession.

[0058] Detection: Pump-probe spectroscopy is used to indirectly infer the existence and intensity of the collective rotation state of molecular gases by measuring the changes in circular dichroism. At the same time, a miniature accelerometer array is arranged near the gas sample.

[0059] Results: At a specific terahertz frequency, abrupt changes in the optical properties of the molecular gas can be observed, while the accelerometer array records a weak acceleration signal synchronized with the driving pulse.

[0060] In summary, the local force field modulation device and method based on multi-particle coherent rotation disclosed in this application have at least the following beneficial effects:

[0061] (1) A novel technical approach: For the first time, it is proposed to use artificially induced macroscopic coherent rotation of particles as a physical mechanism for force field modulation, providing a novel and feasible solution based on existing technologies for long-standing unresolved issues such as gravitational control;

[0062] (2) Detectable effect: Based on the parameters of existing large ion traps or cold atom experimental devices, the magnitude of the expected local force field anomaly under optimal conditions is estimated. ) can be reached to The magnitude is already within the detection range of the most precise atomic interferometers currently available;

[0063] (3) Adjustable parameters: By flexibly adjusting the frequency, intensity and polarization of the driving field, the switching control and intensity adjustment of the force field modulation effect can be realized, providing a foundation for subsequent technical applications;

[0064] (4) Platform compatibility: The device is highly compatible with existing cold atom physics and quantum computing platforms, without the need to develop entirely new extreme condition devices, and has high engineering feasibility.

[0065] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A local force field modulation device based on multi-particle coherent rotation, characterized in that, include: The particle confinement and preparation unit is used to confine selected particles and cool them to their quantum ground state in an ultra-high vacuum environment to generate a particle ensemble with a defined initial quantum state. A coherent driving unit is used to generate an alternating electromagnetic field to drive the particle ensemble into a macroscopic coherent rotational state. A precision detection unit is located in the adjacent space of the particle ensemble to monitor in real time the changes in the local force field caused by the particle ensemble entering a macroscopic coherent rotational state.

2. The local force field modulation device based on multi-particle coherent rotation as described in claim 1, characterized in that, The selected particles include, but are not limited to: alkaline earth metal particles, lanthanide ions, and linear triatomic molecules.

3. The local force field modulation device based on multi-particle coherent rotation as described in claim 1, characterized in that, If the selected particle is a charged particle, the coherent driving unit generates a rotating electric field or a circularly polarized microwave field; if the selected particle is a neutral atom or molecule, the coherent driving unit generates a Raman light field or an alternating gradient magnetic field.

4. The local force field modulation device based on multi-particle coherent rotation as described in claim 1, characterized in that, The precision detection unit includes, but is not limited to, an atomic interferometer gravimeter, a superconducting quantum interferometer, or a high-precision inertial sensor.

5. The local force field modulation device based on multi-particle coherent rotation as described in claim 1, characterized in that, Also includes: An optical resonant cavity is disposed around the particle ensemble.

6. The local force field modulation device based on multi-particle coherent rotation as described in claim 1, characterized in that, When the precision detection unit monitors the local force field changes caused by the particle ensemble entering the macroscopic coherent rotation state in real time, it uses correlation measurement technology to perform coincidence analysis on the signals from multiple detection points.

7. The local force field modulation device based on multi-particle coherent rotation as described in claim 1, characterized in that, The modulation method includes the following steps: S1: Prepare a macroscopic ensemble composed of the selected particles. In an ultra-high vacuum environment, the temperature of the particles is reduced to below millikelvin by laser cooling and ion trap technology through the particle confinement and preparation unit, so that they are in a defined initial quantum state to generate the particle ensemble. S2: By adjusting the output frequency and phase of the coherent driving unit, it resonates with a certain intrinsic rotation mode of the particle ensemble, thereby driving the particle ensemble into a macroscopic coherent rotation state. S3: While step S2 is being performed, the precision detection unit is used to collect the local force field changes in the vicinity of the particle ensemble in real time, and to record whether repeatable abnormal signal peaks exceeding the background noise appear during the drive frequency scanning process. S4: Based on the output of step S3, adjust the driving parameters. The coherent driving unit adjusts the coherence and stability of the macroscopic coherent rotation state based on the adjusted driving parameters to achieve the maximum intensity of the force field modulation effect.

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