Fabrication and characterization of impedance-transformed Josephson parametric amplifier
Source abstract
Abstract
In this paper, we introduce a method of using a double-layer resist lift-off process to prepare the capacitor dielectric layer for fabricating impedance-engineered Josephson parametric amplifiers (IMPAs). Compared to prior art, this method enhances fabrication success rate and accelerates production. The IMPA we made, experimentally achieves an instantaneous bandwidth over 950 (600) MHz with a gain exceeding 10 (14) dB, along with saturation input power of −115 dBm and near quantum-limited noise. We demonstrate the negligible backaction from the IMPA on superconducting qubits, resulting in no significant degradation of the relaxation time and coherence time of the qubits. The IMPA improves the signal-to-noise ratio from 1.69 to 14.56 and enables the amplification chain to achieve high quantum efficiency with η ≈ 0.26, making it a critical necessity for large-scale quantum computation.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Quantum Information and Cryptography · Advanced Electrical Measurement Techniques · Quantum Computing Algorithms and Architecture
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences 1 , Beijing 100190,
School of Physical Sciences, University of Chinese Academy of Sciences 2 , Beijing 100049,
Beijing Key Laboratory of Fault-Tolerant Quantum Computing, Beijing Academy of Quantum Information Sciences 3 , Beijing 100193,
Hefei National Laboratory 4 , Hefei 230088,
Songshan Lake Materials Laboratory 5 , Dongguan 523781,
Funding
National Natural Science Foundation of China · Innovation Program of Quantum Science and Technology · Beijing Nova Program · Natural Science Foundation of Guangdong Province
References (37)
Show source-provided references
1. Quantum limits on noise in linear amplifiers10.1103/physrevd.26.1817 ↗
2. Single-shot readout of a superconducting flux qubit with a flux-driven Josephson parametric amplifier10.1063/1.4821822 ↗
3. Josephson amplifier for qubit readout10.1063/1.3653473 ↗
4. Rapid high-fidelity single-shot dispersive readout of superconducting qubits10.1103/physrevapplied.7.054020 ↗
5. Stabilizing Rabi oscillations in a superconducting qubit using quantum feedback10.1038/nature11505 ↗
6. Deterministic entanglement of superconducting qubits by parity measurement and feedback10.1038/nature12513 ↗
7. Squeezed-state generation using a Josephson parametric amplifier10.1364/josab.4.001551 ↗
8. Amplification and squeezing of quantum noise with a tunable Josephson metamaterial10.1038/nphys1090 ↗
9. Josephson persistent-current qubit10.1126/science.285.5430.1036 ↗
10. Controllable manipulation and entanglement of macroscopic quantum states in coupled charge qubits10.1103/physrevb.68.024510 ↗
11. Charge-insensitive qubit design derived from the cooper pair box10.1103/physreva.76.042319 ↗
12. Flux-driven Josephson parametric amplifier10.1063/1.2964182 ↗
13. High-fidelity readout in circuit quantum electrodynamics using the Jaynes–Cummings nonlinearity10.1103/physrevlett.105.173601 ↗
14. Dispersive magnetometry with a quantum limited squid parametric amplifier10.1103/physrevb.83.134501 ↗
15. Computing prime factors with a Josephson phase qubit quantum processor10.1038/nphys2385 ↗
16. Coherent Josephson qubit suitable for scalable quantum integrated circuits10.1103/physrevlett.111.080502 ↗
17. Progress in superconducting qubits from the perspective of coherence and readout10.1088/1674-1056/22/11/110313 ↗
18. Low-noise cryogenic microwave amplifier characterization with a calibrated noise source10.1063/5.0193591 ↗
19. Multiplexed dispersive readout of superconducting phase qubits10.1063/1.4764940 ↗
20. Surface codes: Towards practical large-scale quantum computation10.1103/physreva.86.032324 ↗
21. Superconducting quantum circuits at the surface code threshold for fault tolerance10.1038/nature13171 ↗
22. Strong environmental coupling in a Josephson parametric amplifier10.1063/1.4886408 ↗
23. Broadband parametric amplification with impedance engineering: Beyond the gain-bandwidth product10.1063/1.4939148 ↗
24. Perspective on traveling wave microwave parametric amplifiers10.1063/5.0064892 ↗
25. A near–quantum-limited Josephson traveling-wave parametric amplifier10.1126/science.aaa8525 ↗
26. Broadband flux-pumped josephson parametric amplifier with an on-chip coplanar waveguide impedance transformer10.35848/1882-0786/abf029 ↗
27. Impedance matched Josephson parametric amplifier with a multisection λ/4 transmission line transformer10.1063/5.0250918 ↗
28. Fabrication of the impedance-matched Josephson parametric amplifier and the study of the gain profile10.1109/tasc.2020.2985650 ↗
29. Application of a broadband josephson parametric amplifier10.18721/JPM.153.265 ↗
30. Broadband coplanar-waveguide-based impedance-transformed Josephson parametric amplifier10.1103/physrevresearch.6.l012035 ↗
31. Offset masks for lift-off photoprocessing10.1063/1.89690 ↗
32. Fabrication of josephson parameter amplifier and its application in squeezing vacuum fluctuations10.1088/1674-1056/ac0796 ↗
33. On-demand shaped-photon emission based on a parametrically modulated qubit10.1103/physrevapplied.23.024019 ↗
34. Fast accurate state measurement with superconducting qubits10.1103/physrevlett.112.190504 ↗
35. Circuit quantum electrodynamics10.1103/revmodphys.93.025005 ↗
36. C. Eichler , “Experimental characterization of quantum microwave radiation and its entanglement with a superconducting qubit,” Ph.D. thesis, ETH Zurich, Zurich, 2013.
37. Deterministic generation of multidimensional photonic cluster states with a single quantum emitter10.1038/s41567-024-02408-0 ↗