Qubit Thermal State Initialization via Controllable Bath
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Solution Overview
Problem
Current solutions for initializing qubits to thermal states in quantum computing are demanding in terms of timing precision and require a large number of parameters to be controlled, also necessitating additional steps in the classical part of the algorithm.
Innovation Solution
An arrangement comprising a qubit, a thermal bath structure with controllable effective temperature, and a control unit to set the effective temperature and control the coupling between the qubit and the thermal bath, allowing for efficient initialization of qubits to a thermal state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional qubit control solutions are used for thermal state initialization, then qubits can be initialized to thermal states, but the timing precision requirements become demanding and additional steps are required in the classical algorithm
Solution Approach 1:
The patent replaces conventional quantum control mechanisms (which require precise timing and complex classical algorithms) with a thermal bath structure that provides thermal state initialization through physical thermal coupling. This substitution eliminates the need for precise timing control and reduces computational complexity in the classical algorithm.
Solution Approach 2:
The patent changes the approach from controlling quantum states through precise timing parameters to controlling thermal states through temperature parameters. By using a thermal bath structure with controllable effective temperature, the system transitions from time-dependent control to temperature-dependent control, simplifying the initialization process.
2Reliability
If conventional qubit control solutions are used for thermal state initialization, then qubits can be initialized to thermal states, but the number of parameters to be controlled increases
Solution Approach 1:
The patent extracts the thermal state initialization function from the complex quantum control system and implements it through a dedicated thermal bath structure. This separation removes the initialization complexity from the main quantum control parameters, reducing the overall number of parameters that need to be controlled.
Solution Approach 2:
The thermal bath structure acts as an intermediary between the quantum system and the thermal state requirement. Instead of directly controlling the qubit states through multiple parameters, the thermal bath provides a simplified interface where temperature control alone suffices for thermal state initialization.
3Reliability
If conventional qubit control solutions are used for thermal state initialization, then qubits can be initialized to thermal states, but additional steps are required in the classical part of the algorithm
Solution Approach 1:
The patent replaces classical algorithmic steps with a physical thermal bath structure that performs initialization automatically through thermal coupling. This substitution eliminates the need for additional classical computation and simplifies the overall system operation.
Solution Approach 2:
The thermal bath structure provides self-service thermal state initialization through spontaneous thermal coupling, eliminating the need for external classical algorithmic intervention. The system automatically achieves thermal states through the physical properties of the thermal bath without requiring additional computational steps.
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 solution relaxes the timing precision requirements and reduces the number of parameters needed for qubit thermal state initialization, improving the efficiency and simplicity of the process.
Implementation Method 1
a thermal bath structure selectively couplable to the at least one qubit, wherein the selective coupling is controllable using at least one coupling control signal, and wherein an effective temperature of the thermal bath structure is controllable via a temperature control signal
Data Source
AI summary
It is an objective to provide an arrangement for initialising at least one qubit to a thermal state. According to an embodiment, an arrangement for initialising at least one qubit to a thermal state comprises: at least one qubit; a thermal bath structure selectively couplable to the at least one qubit, wherein the selective coupling is controllable using at least one coupling control signal, and wherein an effective temperature of the thermal bath structure is controllable via a temperature control signal; and a control unit configured to: set the effective temperature of the thermal bath structure to a target effective temperature via the temperature control signal; and initialise the at least one qubit to a thermal state by coupling the at least one qubit to the thermal bath structure in the target effective temperature using the at least one coupling control signal.