A cryogenic on-chip microwave pulse generator for large-scale superconducting quantum computing
- URL: http://arxiv.org/abs/2407.11775v1
- Date: Tue, 16 Jul 2024 14:33:18 GMT
- Title: A cryogenic on-chip microwave pulse generator for large-scale superconducting quantum computing
- Authors: Zenghui Bao, Yan Li, Zhiling Wang, Jiahui Wang, Jize Yang, Haonan Xiong, Yipu Song, Yukai Wu, Hongyi Zhang, Luming Duan,
- Abstract summary: For superconducting quantum processors, microwave signals are delivered to each qubit from room-temperature electronics to the cryogenic environment through coaxial cables.
This architecture is not viable for millions of qubits required for fault-tolerant quantum computing.
Monolithic integration of the control electronics and the qubits provides a promising solution.
We report such a signal source driven by digital-like signals, generating pulsed microwave emission with well-controlled phase, intensity, and frequency directly at millikelvin temperatures.
- Score: 7.742583250368887
- License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
- Abstract: For superconducting quantum processors, microwave signals are delivered to each qubit from room-temperature electronics to the cryogenic environment through coaxial cables. Limited by the heat load of cabling and the massive cost of electronics, such an architecture is not viable for millions of qubits required for fault-tolerant quantum computing. Monolithic integration of the control electronics and the qubits provides a promising solution, which, however, requires a coherent cryogenic microwave pulse generator that is compatible with superconducting quantum circuits. Here, we report such a signal source driven by digital-like signals, generating pulsed microwave emission with well-controlled phase, intensity, and frequency directly at millikelvin temperatures. We showcase high-fidelity readout of superconducting qubits with the microwave pulse generator. The device demonstrated here has a small footprint, negligible heat load, great flexibility to operate, and is fully compatible with today's superconducting quantum circuits, thus providing an enabling technology for large-scale superconducting quantum computers.
Related papers
- Tailoring coherent microwave emission from a solid-state hybrid system
for room-temperature microwave quantum electronics [8.898365687672815]
We report on a solid-state hybrid system capable of coherent microwave quantum amplification and oscillation at X band via the masing process at room temperature.
By incorporating external driving and active dissipation control into the hybrid system, we achieve efficient tuning of the maser emission characteristics at around 9.4 GHz.
Our work highlights opportunities for optimizing emerging solid-state masers for quantum information processing and communication.
arXiv Detail & Related papers (2023-12-25T05:51:47Z) - Superconductor modulation circuits for Qubit control at microwave
frequencies [0.0]
Single Flux Quantum (SFQ) and Adiabatic Quantum Flux Parametron (AQFP) superconductor logic families can reach ultimate performance at cryogenic temperatures.
We have created a superconductor-based on-chip function generator to control qubits.
arXiv Detail & Related papers (2022-11-12T13:54:30Z) - First design of a superconducting qubit for the QUB-IT experiment [50.591267188664666]
The goal of the QUB-IT project is to realize an itinerant single-photon counter exploiting Quantum Non Demolition (QND) measurements and entangled qubits.
We present the design and simulation of the first superconducting device consisting of a transmon qubit coupled to a resonator using Qiskit-Metal.
arXiv Detail & Related papers (2022-07-18T07:05:10Z) - High-efficiency microwave-optical quantum transduction based on a cavity
electro-optic superconducting system with long coherence time [52.77024349608834]
Frequency conversion between microwave and optical photons is a key enabling technology to create links between superconducting quantum processors.
We propose a microwave-optical platform based on long-coherence-time superconducting radio-frequency (SRF) cavities.
We show that the fidelity of heralded entanglement generation between two remote quantum systems is enhanced by the low microwave losses.
arXiv Detail & Related papers (2022-06-30T17:57:37Z) - Slowing down light in a qubit metamaterial [98.00295925462214]
superconducting circuits in the microwave domain still lack such devices.
We demonstrate slowing down electromagnetic waves in a superconducting metamaterial composed of eight qubits coupled to a common waveguide.
Our findings demonstrate high flexibility of superconducting circuits to realize custom band structures.
arXiv Detail & Related papers (2022-02-14T20:55:10Z) - Near-Field Terahertz Nanoscopy of Coplanar Microwave Resonators [61.035185179008224]
Superconducting quantum circuits are one of the leading quantum computing platforms.
To advance superconducting quantum computing to a point of practical importance, it is critical to identify and address material imperfections that lead to decoherence.
Here, we use terahertz Scanning Near-field Optical Microscopy to probe the local dielectric properties and carrier concentrations of wet-etched aluminum resonators on silicon.
arXiv Detail & Related papers (2021-06-24T11:06:34Z) - A low-noise on-chip coherent microwave source [0.0]
We report an on-chip device that is based on a Josephson junction coupled to a spiral resonator and is capable of coherent continuous-wave microwave emission.
The infidelity of typical quantum gate operations due to the phase noise of this cryogenic 25-pW microwave source is less than 0.1% up to 10-ms evolution times.
arXiv Detail & Related papers (2021-03-13T04:51:53Z) - Millikelvin temperature cryo-CMOS multiplexer for scalable quantum
device characterisation [44.07593636917153]
Quantum computers based on solid state qubits have been a subject of rapid development in recent years.
Currently, each quantum device is controlled and characterised though a dedicated signal line between room temperature and base temperature of a dilution refrigerator.
This approach is not scalable and is currently limiting the development of large-scale quantum system integration and quantum device characterisation.
arXiv Detail & Related papers (2020-11-23T16:22:15Z) - Control and readout of a superconducting qubit using a photonic link [0.0]
A universal quantum computer will require processors with millions of quantum bits (qubits)
In superconducting quantum processors, each qubit is individually addressed with microwave signal lines that connect room temperature electronics to the cryogenic environment of the quantum circuit.
Here we introduce a photonic link employing an optical fiber to guide modulated laser light from room temperature to a cryogenic photodetector, capable of delivering shot-noise limited microwave signals directly at millikelvin temperatures.
arXiv Detail & Related papers (2020-09-02T16:19:41Z) - Waveguide Bandgap Engineering with an Array of Superconducting Qubits [101.18253437732933]
We experimentally study a metamaterial made of eight superconducting transmon qubits with local frequency control.
We observe the formation of super- and subradiant states, as well as the emergence of a polaritonic bandgap.
The circuit of this work extends experiments with one and two qubits towards a full-blown quantum metamaterial.
arXiv Detail & Related papers (2020-06-05T09:27:53Z) - Circuit Quantum Electrodynamics [62.997667081978825]
Quantum mechanical effects at the macroscopic level were first explored in Josephson junction-based superconducting circuits in the 1980s.
In the last twenty years, the emergence of quantum information science has intensified research toward using these circuits as qubits in quantum information processors.
The field of circuit quantum electrodynamics (QED) has now become an independent and thriving field of research in its own right.
arXiv Detail & Related papers (2020-05-26T12:47:38Z)
This list is automatically generated from the titles and abstracts of the papers in this site.
This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.