Quantum switch for itinerant microwave single photons with superconducting quantum circuits
Yan Li, Zenghui Bao, Zhiling Wang, Yukai Wu, Jiahui Wang, Jize Yang, Haonan Xiong, Yipu Song, Hongyi Zhang, Luming Duan
DOI 10.1103/PhysRevApplied.21.044030 · Physical Review Applied
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
A classical switch or router determines which of several inputs to the device passes through the output. In analogy, a quantum switch that coherently links the input to a superposition of several outputs plays an important role in quantum information processing, especially when operating at the fundamental limit where a single photon can be controlled. The controllable path superposition of propagating photonic qubits enabled by the quantum switch provides the basis for numerous quantum applications, including entanglement generation and distribution, enhanced quantum communication, and quantum random access memory. In this work, we realize such a quantum switch for microwave single photons with superconducting quantum circuits. We use a superconducting qubit to coherently switch the output path of single microwave photons and confirm quantum entanglement between the control qubit and the photons’ propagation path. We further showcase the generation of quantum entanglement between a time-bin-encoded propagating photonic qubit and a superconducting qubit with the quantum switch, thus providing a versatile approach to generate reconfigurable multinode entanglement in one step. As such, our work provides a prime building block for microwave quantum networks and modular superconducting quantum computing.
Similar papers
Single-photon quantum router in the microwave regime utilizing double superconducting resonators with tunable coupling
similarity 0.93Y. T. Zhu & W. Z. Jia
Source status unknown — claims are unverified
Generation of Frequency-Tunable Shaped Single Microwave Photons Using a Fixed-Frequency Superconducting Qubit
similarity 0.93Takeaki Miyamura et al.
Source status unknown — claims are unverified
Coherent output of photons from coupled superconducting transmission line resonators controlled by charge qubits
similarity 0.92Lan Zhou et al.
Source status unknown — claims are unverified
Efficient single-photon frequency conversion in the microwave domain using superconducting quantum circuits
similarity 0.92W. Z. Jia et al.
Source status unknown — claims are unverified
Observation of Entanglement between Itinerant Microwave Photons and a Superconducting Qubit
similarity 0.92C. Eichler et al.
Source status unknown — claims are unverified
On-Demand Storage and Retrieval of Microwave Photons Using a Superconducting Multiresonator Quantum Memory
similarity 0.92Zenghui Bao et al.
Source status unknown — claims are unverified