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Microwave Photonics Systems Based on Whispering-gallery-mode Resonators
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Enhanced Phonon Antibunching in a Circuit Quantum Acoustodynamical System Containing Two Surface Acoustic Wave
Tai-Shuang Yin1, Guang-Ri Jin1, Aixi Chen1
1Department of Physics, Zhejiang Sci-Tech University, Hangzhou 310018, China.
Micromachines
|April 23, 2022
Summary
We demonstrate phonon antibunching and blockade in a circuit quantum acoustodynamical system. This quantum interference effect in surface acoustic wave resonators offers new avenues for quantum information processing.
Area of Science:
- Quantum physics
- Acoustodynamics
- Superconducting circuits
Background:
- Circuit quantum acoustodynamics (cQAD) enables quantum control of acoustic phonons.
- Surface acoustic wave (SAW) resonators coupled to superconducting qubits are promising for quantum applications.
Purpose of the Study:
- To propose and investigate a scheme for achieving phonon antibunching and blockade.
- To explore the manipulation of nonclassical phonon effects in a cQAD system.
Main Methods:
- Numerical calculation of the second-order correlation function to analyze phonon statistics.
- Investigation of systems with one and two driven SAW resonators coupled to a superconducting qubit.
Main Results:
- Phonon antibunching achieved in a single driven SAW resonator due to quantum interference, even with weak qubit-phonon coupling.
- Significant enhancement of phonon antibunching and generation of phonon blockade when two SAW resonators are simultaneously driven.
- Optimization of phonon blockade by adjusting the intensity ratio of driving fields.
Conclusions:
- The proposed scheme provides a novel method for controlling nonclassical phonon effects.
- This work may lead to the development of new SAW-based phonon devices for quantum information processing.
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