Generation of time-frequency entangled photon pairs propagating in separate waveguides in circuit QED setup
arXiv:2207.08289 · doi:10.1103/PhysRevA.106.052420
Abstract
Time-frequency entangled photons constitute an important resource for a plethora of applications across the diverse quantum technology landscape. Thus, efficient and tunable setups for the generation of entangled photons are requisite for modern quantum technologies. In this work, we propose a generic cavity QED setup designed for on-demand generation of time-frequency entangled photon pairs, with each photon propagating in a separate waveguide. We outline a potential incarnation of this setup in the microwave superconducting circuit QED architecture. We derive and numerically solve the set of equations of motion governing the evolution of the quantum state of the system, allowing us to examine the photon emission dynamics. Using the Schmidt decomposition of the joint spectral amplitude of the emitted photon pair, we compute the entanglement entropy analyzing its dependence on the system parameters. We outline the potential extension of the proposed scheme for the generation of multiphoton time-frequency entangled states.
18 pages, 9 figures
References in corpus (17)
- Charge insensitive qubit design derived from the Cooper pair box
- Microwave photonics with superconducting quantum circuits
- Simple pulses for elimination of leakage in weakly nonlinear qubits
- Quantum Illumination at the Microwave Wavelengths
- Microwave Quantum Illumination
- Frequency-encoded photonic qubits for scalable quantum information processing
- Fast Reset and Suppressing Spontaneous Emission of a Superconducting Qubit
- Generating Entangled Microwave Radiation Over Two Transmission Lines
- Reducing intrinsic loss in superconducting resonators by surface treatment and deep etching of silicon substrates
- Widely tunable, non-degenerate three-wave mixing microwave device operating near the quantum limit
- Tunable coupling engineering between superconducting resonators: from sidebands to effective gauge fields
- Life after charge noise: recent results with transmon qubits
- Proposed Bell experiment with genuine energy-time entanglement
- Correlations and entanglement of microwave photons emitted in a cascade decay
- Efficient on-chip source of microwave photon pairs in superconducting circuit QED
- Simultaneous excitation of two noninteracting atoms with time-frequency correlated photon pairs in a superconducting circuit
- Photon-pair blockade in a Josephson-photonics circuit with two nondegenerate microwave resonators