研究目的
Investigating the photon transmission of a Floquet cavity quantum electrodynamic (QED) system containing three periodically modulated cavities interacting with a two-level atom and demonstrating its feature as a quantum photonic transistor.
研究成果
The system demonstrates the feature of a quantum photonic transistor, where the photon transmission is controlled by the quantum states of the atom. This device can be used as a building block for various quantum information processing, offering a significant advantage by relaxing the requirement of a single photon source in realizing quantum information processing.
研究不足
The study assumes ideal conditions where the atom does not suffer decay and decoherence, and the losses of the cavities to modes other than those in the transmission lines are neglected because these losses are small in superconducting circuits.
1：Experimental Design and Method Selection:
The study involves a Floquet cavity QED system with three periodically modulated cavities interacting with a two-level atom. The input-output relations and the second-order correlation functions of the output fields are calculated to investigate the photon transmission properties.
2：Sample Selection and Data Sources:
The system under investigation consists of three periodically modulated cavities (superconducting resonators) coupled to a two-level atom (superconducting qubit).
3：List of Experimental Equipment and Materials:
The setup includes three single-mode cavities and a two-level atom, achievable in superconducting circuits where the two-level atom is a superconducting qubit, and the three single-mode cavities are superconducting resonators.
4：Experimental Procedures and Operational Workflow:
The frequencies of the three superconducting resonators are dynamically modulated. The input-output relations of the system are investigated, and the effect of the atomic states on the photon transmission is analyzed.
5：Data Analysis Methods:
The expectation values of the input and output operators are calculated to study the properties of the output field, including the second-order correlation functions between the output fields of transmission line 2 and 3.
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