Abstract
Over the past several decades, a rich series of experiments has repeatedly verified the quantum nature of superconducting devices, leading some of these systems to be regarded as artificial atoms. In addition to their application in quantum information processing, these ‘atoms’ provide a test bed for studying quantum mechanics in macroscopic limits. Regarding the last point, we present here a feasible protocol for directly testing time reversal symmetry (TRS) through the verification of the microreversibility principle in a superconducting artificial atom. TRS is a fundamental property of quantum mechanics and is expected to hold if the dynamics of the artificial atom strictly follow the Schrödinger equation. However, this property has yet to be tested in any macroscopic quantum system. In the end, as an application of this work, we outline how the successful implementation of the protocol would provide the first verification of the quantum work fluctuation theorems with superconducting systems.
Highlights
Few concepts in nature are so simple and yet as profound as those related to symmetry
It should be technologically feasible to perform a test of microreversibility, and Time reversal symmetry (TRS), via equation (1), in an artificial atom based upon an superconducting quantum device (SQD), whose quantum dynamics is associated with circuit excitations, characterized by superpositions of several charge states
In the present paper we have created a protocol for the preparation, time evolution and measurement of the quantum state of an SQD in order to test TRS in a new regime, namely in macroscopic quantum dynamics, using current technology and techniques
Summary
In. Any further distribution of addition to their application in quantum information processing, these ‘atoms’ provide a test bed for this work must maintain attribution to the studying quantum mechanics in macroscopic limits. TRS is a fundamental property of quantum mechanics and is expected to hold if the dynamics of the artificial atom strictly follow the Schrödinger equation. This property has yet to be tested in any macroscopic quantum system. As an application of this work, we outline how the successful implementation of the protocol would provide the first verification of the quantum work fluctuation theorems with superconducting systems
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