Quantum electrodynamics of non-demolition detection of single microwave
photon by superconducting qubit array
- URL: http://arxiv.org/abs/2205.14490v2
- Date: Mon, 5 Dec 2022 16:10:51 GMT
- Title: Quantum electrodynamics of non-demolition detection of single microwave
photon by superconducting qubit array
- Authors: P. Navez, A. G. Balanov, S. E. Savel'ev, A. M. Zagoskin
- Abstract summary: We analyze the effects of microwave photons on the array response to a weak probe signal exciting the resonator.
Remarkably, a single-photon signal can be detected by even a sole qubit in cavity under the realistic range of system parameters.
- Score: 0.0
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: By consistently applying the formalism of quantum electrodynamics we
developed a comprehensive theoretical framework describing the interaction of
single microwave photons with an array of superconducting transmon qubits in a
wave guide cavity resonator. In particular, we analyze the effects of microwave
photons on the arrays response to a weak probe signal exciting the resonator.
The study reveals that a high quality factor cavities provide better spectral
resolution of the response, while cavities with moderate quality factor allow
better sensitivity for a single photon detection. Remarkably, our analysis
showed that a single-photon signal can be detected by even a sole qubit in
cavity under the realistic range of system parameters. We also discuss how
quantum properties of the photons and electrodynamical properties of resonators
affect the response of qubits array. Our results provide an efficient
theoretical background for informing the development and design of quantum
devices consisting of arrays of qubits, especially for those using a cavity
where an explicit expression for the transmission or reflection is required.
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