All-optical single-shot readout of a superconducting qubit
arXiv:2310.16817 · doi:10.1038/s41567-024-02741-4
Abstract
The rapid development of superconducting quantum hardware is expected to run into significant I/O restrictions due to the need for large-scale error correction in a cryogenic environment. Classical data centers rely on fiber-optic interconnects to remove similar networking bottlenecks and to allow for reconfigurable, software-defined infrastructures. In the same spirit, ultra-cold electro-optic links have been proposed and used to generate qubit control signals, or to replace cryogenic readout electronics. So far, the latter suffered from either low efficiency, low bandwidth and the need for additional microwave drives, or breaking of Cooper pairs and qubit states. In this work we realize electro-optic microwave photonics at millikelvin temperatures to implement a radio-over-fiber qubit readout that does not require any active or passive cryogenic microwave equipment. We demonstrate all-optical single-shot-readout by means of the Jaynes-Cummings nonlinearity in a circulator-free readout scheme. Importantly, we do not observe any direct radiation impact on the qubit state as verified with high-fidelity quantum-non-demolition measurements despite the absence of shielding elements. This compatibility between superconducting circuits and telecom wavelength light is not only a prerequisite to establish modular quantum networks, it is also relevant for multiplexed readout of superconducting photon detectors and classical superconducting logic. Moreover, this experiment showcases the potential of electro-optic radiometry in harsh environments - an electronics-free sensing principle that extends into the THz regime with applications in radio astronomy, planetary missions and earth observation.
References in corpus (37)
- Observation of high coherence in Josephson junction qubits measured in a three-dimensional circuit QED architecture
- How to factor 2048 bit RSA integers in 8 hours using 20 million noisy qubits
- Superconducting qubit in waveguide cavity with coherence time approaching 0.1ms
- Approaching Unit Visibility for Control of a Superconducting Qubit with Dispersive Readout
- Quantum transduction of optical photons from a superconducting qubit
- The Future of Quantum Computing with Superconducting Qubits
- Realizing Rapid, High-Fidelity, Single-Shot Dispersive Readout of Superconducting Qubits
- Quantum back-action of variable-strength measurement
- High-Fidelity Readout in Circuit Quantum Electrodynamics Using the Jaynes-Cummings Nonlinearity
- Rapid high-fidelity multiplexed readout of superconducting qubits
- Millisecond charge-parity fluctuations and induced decoherence in a superconducting qubit
- Efficient single sideband microwave to optical conversion using an electro-optical whispering gallery mode resonator
- Loss and decoherence due to stray infrared light in superconducting quantum circuits
- Hot non-equilibrium quasiparticles in transmon qubits
- Measurement-induced state transitions in a superconducting qubit: Beyond the rotating wave approximation
- Control and readout of a superconducting qubit using a photonic link
- Protecting superconducting qubits from external sources of loss and heat
- Thermal and Residual Excited-State Population in a 3D Transmon Qubit
- Gated conditional displacement readout of superconducting qubits
- Using a qubit to measure photon number statistics of a driven, thermal oscillator
- Improved Superconducting Qubit Readout by Qubit-Induced Nonlinearities
- Response of the Strongly-Driven Jaynes-Cummings Oscillator
- Cryogenic electro-optic interconnect for superconducting devices
- Decoherence of superconducting qubits caused by quasiparticle tunneling
- Entangling microwaves with optical light
- Multiplexed dispersive readout of superconducting phase qubits
- Cavity quantum electro-optics: Microwave-telecom conversion in the quantum ground state
- Quantum-enabled interface between microwave and telecom light
- Assessing requirements to scale to practical quantum advantage
- Photon-assisted charge-parity jumps in a superconducting qubit
- Single Flux Quantum-Based Digital Control of Superconducting Qubits in a Multi-Chip Module
- Overcoming I/O bottleneck in superconducting quantum computing: multiplexed qubit control with ultra-low-power, base-temperature cryo-CMOS multiplexer
- Non-degenerate parametric amplifiers based on dispersion engineered Josephson junction arrays
- Dissipative stabilization of squeezing beyond 3 dB in a microwave mode
- Coherent optical control of a superconducting microwave cavity via electro-optical dynamical back-action
- Qubit dephasing due to Quasiparticle Tunneling
- Coherent control of a superconducting qubit using light
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- Quantum Acoustics with Superconducting Qubits in the Multimode Transition-Coupling Regime
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