Detection of Geometric Phases in Flux Qubits with Coherent Pulses

Details Detection of Geometric Phases in Flux Qubits with Coherent Pulses Detection of Geometric Phases in Flux Qubits with Coherent Pulses

2005-07-29

arxiv.org/abs/cond-mat/0507709v3

Phys. Rev. B 73, 020502(R) (2006)

Physics

Condensed Matter

Superconductivity

4pages,3figures

Scientific paper

10.1103/PhysRevB.73.020502

We propose a experimentally feasible scheme to demonstrate the geometric phase in flux qubits by means of detuning coherent microwave pulse techniques. Through measuring the probability of the persistent current state in flux qubits, one can detect the Berry phase that is acquired with system's Hamiltonian adiabatical circular evolution in the parameter space. Furthermore, we show that one should choose an appropriate amplitude of pulses in an experiment to obtain high readout resolution when detuning frequency of pulses is fixed and controlled phase shift gates can be implemented based on the geometric phases by inductance coupling two flux qubits.

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