Switchable Superconducting Sheaths for Interaction-Free Quantum Bit Entanglement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for entangling quantum bits in quantum computers require complex and costly magnetic field switching, and may involve classical information channels or interactions, making them inefficient and costly.
Innovation Solution
The method involves using switchable shielding to quickly superpose a homogeneous magnetic field on quantum bits, allowing for interaction-free entanglement without the need for complex magnetic field switching or classical information channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a homogeneous magnetic field is superposed on quantum bits to achieve entanglement, then entanglement is achieved, but the magnetic field needs to be switched on and off in a defined manner which is complicated and costly
Solution Approach 1:
The patent divides the spatial region into multiple zones with different magnetic field strengths by positioning quantum bits at different locations. This eliminates the need for temporal switching of a homogeneous field, as the field is already segmented in space. Each quantum bit experiences a different static magnetic field configuration, achieving entanglement without complex switching operations.
Solution Approach 2:
Instead of switching the magnetic field on and off in time to achieve entanglement, the patent inverts the approach by creating a spatially segmented magnetic field configuration. The magnetic field is divided into multiple spatial regions with different strengths, and quantum bits are positioned in these regions, transforming a temporal switching problem into a spatial configuration solution.
2Ease of operation
If switchable shielding is used to quickly superpose magnetic field, then operational complexity is reduced, but shielding mechanism is introduced
Solution Approach 1:
The patent pre-configures the magnetic field into multiple spatial segments before the quantum bits are introduced or before entanglement is desired. The magnetic field segmentation is established in advance through permanent magnets or fixed electromagnetic sources positioned in space, eliminating the need for dynamic shielding mechanisms during operation. The quantum bits are then positioned in these pre-segmented field regions.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach simplifies and cost-effectively achieves entanglement of quantum bits, reducing operational complexity and costs while avoiding interactions that complicate existing methods.
Implementation Method 1
the preparation step essential for the process of entanglement consists of it being necessary to sufficiently quickly superpose a homogeneous magnetic field B, over the quantum bits to be entangled
Implementation Method 2
a homogeneous magnetic field 13, can also be superposed sufficiently quickly onto the quantum bits to be entangled by means of shielding that can be switched on and off
Data Source
AI summary
A method for interaction-free entanglement of quantum bits in quantum computers, in which the quantum bits to be entangled are available in the state Ψ44 with arbitrarily real phases φ and θ as an elementary quantum system. The two quantum bits (1) and (2) are localized in spatial regions (6) and (6′) and surrounded by switchable sheaths (7) and (7′) preferably a superconductor with the jump temperature TSU. The switchable sheaths, in the activated state, completely displace a global, homogeneous magnetic field Bz from the spatial regions (6) and (6′). In the inactivated state, the switchable sheaths do not shield the spatial regions (6) and (6′). If the switchable sheaths are switched from the activated state into the inactivated state while observing the boundary condition (R3), as a result of this, the two quantum bits (1) and (2) are transferred into the entangled state Ψ−.