Generation of Frequency-Tunable Shaped Single Microwave Photons Using a Fixed-Frequency Superconducting Qubit
arXiv:2503.05536 · doi:10.1103/PRXQuantum.6.020347
Abstract
Scaling up a superconducting quantum computer will likely require quantum communication between remote chips, which can be implemented using an itinerant microwave photon in a transmission line. To realize high-fidelity communication, it is essential to control the frequency and temporal shape of the microwave photon. In this work, we demonstrate the generation of frequency-tunable shaped microwave photons without resorting to any frequency-tunable circuit element. We develop a framework which treats a microwave resonator as a band-pass filter mediating the interaction between a superconducting qubit and the modes in the transmission line. This interpretation allows us to stimulate the photon emission by an off-resonant drive signal. We characterize how the frequency and temporal shape of the generated photon depends on the frequency and amplitude of the drive signal. By modulating the drive amplitude and frequency, we achieve a frequency tunability of 40 MHz while maintaining the photon mode shape time-symmetric. Through measurements of the quadrature amplitudes of the emitted photons, we demonstrate consistently high state and process fidelities around 95\% across the tunable frequency range. Our hardware-efficient approach eliminates the need for additional biasing lines typically required for frequency tuning, offering a simplified architecture for scalable quantum communication.
16 pages, 12 figures
References in corpus (43)
- Charge insensitive qubit design derived from the Cooper pair box
- Surface codes: Towards practical large-scale quantum computation
- Quantum state transfer and entanglement distribution among distant nodes in a quantum network
- Circuit Quantum Electrodynamics
- Fast Scalable State Measurement with Superconducting Qubits
- Complete universal quantum gate set approaching fault-tolerant thresholds with superconducting qubits
- Deterministic Quantum State Transfer and Generation of Remote Entanglement using Microwave Photons
- Microwave Quantum Link between Superconducting Circuits Housed in Spatially Separated Cryogenic Systems
- On-demand quantum state transfer and entanglement between remote microwave cavity memories
- Fast and Unconditional All-Microwave Reset of a Superconducting Qubit
- Laser-annealing Josephson junctions for yielding scaled-up superconducting quantum processors
- Deterministic multi-qubit entanglement in a quantum network
- Deterministic remote entanglement of superconducting circuits through microwave two-photon transitions
- Microwave-controlled generation of shaped single photons in circuit quantum electrodynamics
- Quantum non-demolition detection of an itinerant microwave photon
- On-Demand Directional Microwave Photon Emission Using Waveguide Quantum Electrodynamics
- Fast readout and reset of a superconducting qubit coupled to a resonator with an intrinsic Purcell filter
- Characterizing Quantum Microwave Radiation and its Entanglement with Superconducting Qubits using Linear Detectors
- Catching Shaped Microwave Photons with 99.4% Absorption Efficiency
- Quantum theory of a bandpass Purcell filter for qubit readout
- Tuneable on-demand single-photon source
- Low-loss interconnects for modular superconducting quantum processors
- Violating Bell's inequality with remotely-connected superconducting qubits
- Microwave-Induced Amplitude and Phase Tunable Qubit-Resonator Coupling in Circuit Quantum Electrodynamics
- Error-detected state transfer and entanglement in a superconducting quantum network
- Storage and on-demand release of microwaves using superconducting resonators with tunable coupling
- On-demand microwave generator of shaped single photons
- Flying microwave qubits with nearly perfect transfer efficiency
- Remote entanglement via adiabatic passage using a tunably-dissipative quantum communication system
- Time-Reversal Symmetrization of Spontaneous Emission for High Fidelity Quantum State Transfer
- Enhancing Dispersive Readout of Superconducting Qubits Through Dynamic Control of the Dispersive Shift: Experiment and Theory
- Quantum communication with time-bin encoded microwave photons
- Tunable Microwave Single-photon Source Based on Transmon Qubit with High Efficiency
- Deterministic quantum teleportation between distant superconducting chips
- Deterministic remote entanglement using a chiral quantum interconnect
- Generation and efficient measurement of single photons from fixed frequency superconducting qubits
- On-demand generation and characterization of a microwave time-bin qubit
- Bidirectional multi-photon communication between remote superconducting nodes
- Deterministic loading and phase shaping of microwaves onto a single artificial atom
- Post-fabrication frequency trimming of coplanar-waveguide resonators in circuit QED quantum processors
- Deterministic generation of shaped single microwave photons using a parametrically driven coupler
- Parametrically-controlled microwave-photonic interface for the fluxonium
- On-demand shaped photon emission based on a parametrically modulated qubit