10 results about "Teleportation" patented technology

A method performed by Charlie in a quantum communication system, according to one embodiment of the present disclosure, may comprise the steps of: forming a first Bell-state resource between a first qubit and a qubit included in Alice; forming a second Bell-state resource between a second qubit and a qubit included in Bob; transforming, into a first Greenberger-Horne-Zeilinger (GHZ) state, a three-qubit state from among the second qubit, a third qubit, and the qubit included in Bob; performing a Bell-state measurement between the first qubit and the second qubit; transforming, on the basis of the Bell-state measurement performing result, a three-qubit state from among the third qubit, the qubit included in Alice, and the qubit included in Bob into a second GHZ state, and performing entanglement teleportation by using the second GHZ state as a resource.

There is provided a method of performing a data-data controlled-unitary gate between a first data qubit as control in a first basis (|e0〉, |e1〉) and a second data qubit as target, and wherein the unitary gate of the controlled-unitary matrix is defined by a unitary matrix U, the method comprising the following operations: (i) providing the first data qubit in the first basis (|e0〉, |e1〉), the second data qubit, and an ancilla qubit, wherein each data qubit is connected to the ancilla qubit and wherein the first and second data qubits are not directly connected to each other, wherein the first data, second data, and ancilla qubits are all either (A) physical qubits each hosted in a respective physical mode of one or more physical resonators or (B) logical qubits each hosted by a plurality of physical qubits which are configured to perform an error correction code to encode the respective logical qubits; (ii) configuring the ancilla qubit to be able to perform a controlled-unitary gate with either of the first and second data qubits. The method further comprises the following operations: (iii) performing a first one-qubit state teleportation of the first data qubit to the ancilla qubit from the first basis (|e0〉, |e1〉) to a second basis (|g0〉, |g1〉) by: (a) preparing a two-qubit state entangling the first data qubit and the ancilla qubit, and (b) subsequently performing a measurement-based uncomputation of the first data qubit; (iv) performing an ancilla-data controlled-unitary gate between the ancilla qubit as control in the second basis (|g0〉, |g1〉) and the second data qubit as target; (vi) performing a second one-qubit state teleportation of the ancilla qubit to the first data qubit from the basis (|g0〉,|g0〉) to the basis (|e0〉, |e1〉) by: (a) preparing a second two-qubit state entangling the ancilla qubit and the first data qubit, and (b) subsequently performing a measurement-based uncomputation of the ancilla qubit. Operation (iv) is performed at any time before operation (vi)(b), operation (vi)(a) is performed after operation (iii)(b), and wherein (I) the unitary gate of the ancilla-data controlled-unitary gate is defined by the unitary matrix U, or (II) the unitary gate of the ancilla-data controlled-unitary gate is defined by another unitary matrix V and the method comprises a sequence of one or more gates that, in combination with the unitary V-gate of the ancilla-data controlled-unitary gate, performs the function of applying the unitary U-gate on the second data qubit. There is also provided a quantum system, a computer program product, and a computer-readable medium.

The present application relates to the technical field of distributed quantum computing, and more particularly to a distributed quantum circuit teleportation optimization method based on gate exchange pruning. The problem of long solving time or excessive expansion branches caused by the lack of fine pruning and state merging mechanism is solved. The technical scheme is as follows: step S1: quantum circuit analysis and data structure establishment; step S2: weighted interaction graph construction and candidate partition set generation; step S3: global gate identification and single-pass teleportation construction; step S4: pruning search to solve the minimum single-pass teleportation times and plan output. The beneficial effects of the present application are as follows: compared with the prior art, the present application has more sufficient and verifiable beneficial effects: the global communication overhead can be directly quantified to decrease; the single batch throughput is improved and the redundant teleportation is reduced; and the solution cost is significantly reduced.

Disclosed examples relate to extracting a magic state on a quantum computing device, the magic state encoded in a [[n, k, d]] block code including an outer code. One example provides a method that includes preparing an encoded noisy magic state using data qubits and measuring a Clifford stabilizer on the data qubits, thereby applying an inner code. The method further includes initializing output qubits and initiating a teleportation of an extracted magic state derived from the encoded noisy magic state to the output qubits. The method further includes measuring an X stabilizer on the data qubits, post-selecting based on the result, destructively measuring each data qubit with a Z stabilizer, and applying one or more post-selection conditions to the data qubits to complete the teleportation of the extracted magic state to the output qubits.

Apparatuses, systems, and techniques providing a teleportation system combining virtual reality and augment reality are provided. A first set of data associated with a real-world environment is received. An object in the real-world environment, and a first location of the object, are identified based on a subset of the first set of data. A second location of a first user within the real-world environment is identified based on the first set of data. A second set of data representing a first avatar of a guest user is received. A virtual representation of the real-world environment is generated based on the first and second sets of data, comprising the object positioned at the first location and at least one of a second avatar of the first user or the first avatar of the guest user. The virtual representation is send to a computing system associated with the guest user.

In a virtual object control method, a reference image is obtained. A teleportation control element is output for display based on the reference image including information about a virtual environment. A first virtual object controlled by a player is teleported to a reference position in the virtual environment based on a trigger operation performed on the teleportation control element. The reference position is based on one of a position of a second virtual object in the virtual environment and a position associated with the reference image in the virtual environment.

This application provides an immersive telemanipulation system for a robotic arm based on mixed reality force mapping, including master-end control, slave-end execution, communication transmission, spatiotemporal synchronization, heterogeneous kinematic mapping, bidirectional force control, edge trajectory planning, and mixed reality presentation modules. The master end collects joint motion information, while the slave end collects interactive forces, tactile deformation, and environmental images. The spatiotemporal synchronization module achieves synchronization between visual and force feedback through predictive motion compensation. The heterogeneous mapping module utilizes an adaptive scaling matrix and null-space projection to achieve high-precision master-slave mapping. Bidirectional force control estimates environmental stiffness online through a perturbation observer and adaptively switches between force and position hybrid control. Edge planning employs sparse sampling and temporal elastic band optimization to achieve lightweight real-time obstacle avoidance. The mixed reality presentation registers a virtual robotic arm and overlays force vectors and safety boundaries, adaptively switching display modes based on lighting conditions. This invention significantly improves the sense of presence, operational accuracy, and safety of telemanipulation.

An example embodiment provides a technique for a distributed quantum Fourier transform (QFT) with reduced EPR pairs. The QFT may be run in a quantum datacenter between multiple data units, where embodiments run the QFT while using multiple resources. The technique implements a QFT(n) (a QFT with n qubits) on two quantum processors, and is extended to implement the QFT(n) on three or more quantum processors. At the culmination of the technique, the qubits are properly positioned (in reverse order) among the quantum processors to obviate swapping of the qubits at completion of the QFT circuit. The technique relies on teleportation of the qubits.

The biomimetic platform described herein includes a fluid synthesis device having a first fluid input selectively coupleable to a source of a first input fluid solution and a second fluid input selectively coupleable to a source of a second input fluid solution. The fluid synthesis device further includes a fluid output. The biomimetic platform further includes a fluid addressing system having a fluid input fluidically coupled to the fluid output of the fluid synthesis device. The fluid addressing system further includes a first fluid output and a second fluid output. The biomimetic platform further includes a first biomimetic device having a fluid input fluidically coupled to the first fluid output of the fluid addressing system and a second biomimetic device having a fluid input fluidically coupled to the second fluid output of the fluid addressing system.

This application discloses a quantum message authentication method and apparatus based on quantum teleportation, relating to the fields of quantum communication and information security. It includes: a transmitter distributing a second particle from an entangled particle pair to a receiver, while retaining the first particle; generating multiple sets of classical authentication information based on the original message and predetermined authentication rules; encoding each set of authentication information onto the quantum state of an auxiliary particle; performing a Bell kinematic measurement on the encoded auxiliary particle and its corresponding first particle, outputting the classical measurement result; and sending the measurement result to the receiver, enabling the receiver to obtain the original message. The receiver, using its held second particle, the received classical measurement result, and the original message, reconstructs the authentication information generated by the transmitter and verifies the original message according to the authentication rules. This application combines quantum teleportation with classical authentication rules, transmitting critical authentication information through a physically secure quantum channel, effectively resisting quantum computing attacks and man-in-the-middle attacks.