Millimetre-Wave Superconducting Quantum Circuits

The project aims to develop and test superconducting qubits operating at 100 GHz to enhance quantum coherence, reduce noise, and enable faster quantum computing while addressing associated challenges.

Subsidie
€ 2.736.708
2022

Projectdetails

Introduction

I propose an experimental program to investigate quantum-coherent properties of superconducting circuits at frequencies one order of magnitude larger than those demonstrated until now. My idea is to develop a new generation of superconducting qubits with significantly increased energy level separation between their ground and the first excited states.

Technological Advantages

Pushing the operation frequency of superconducting qubits up offers a number of potential technological advantages:

  1. Higher Operating Temperatures: Due to the increased level separation, such novel millimetre-wave quantum processors could be operated at much higher temperatures than their present counterparts.

  2. Better Noise Protection: Even at millikelvin temperatures, the higher qubit resonance frequency will offer better protection from non-thermal noise.

  3. Faster Logic Gates: Qubit logic gates can be performed faster at higher frequencies.

  4. Reduced Component Size: Quantum circuit components can be reduced in size due to smaller wavelength at higher frequencies, thus allowing for a smaller footprint, denser packaging, and better integration.

Challenges and Open Questions

These numerous potential advantages face, nevertheless, a number of challenges and pose open questions that will be addressed and are aimed to be answered in the proposed project.

Project Goals

The goal is to develop prototype qubits for the 100 GHz frequency range and to demonstrate their manipulation and quantum state tomography. This challenging project will unearth fundamental knowledge about decoherence in this yet unexplored frequency range.

Research Focus

We will study dielectric loss and other decoherence sources as functions of frequency and temperature. Once successful, this approach will open a new way of building a superconducting quantum computer.

Financiële details & Tijdlijn

Financiële details

Subsidiebedrag€ 2.736.708
Totale projectbegroting€ 2.736.708

Tijdlijn

Startdatum1-10-2022
Einddatum30-9-2027
Subsidiejaar2022

Partners & Locaties

Projectpartners

  • KARLSRUHER INSTITUT FUER TECHNOLOGIEpenvoerder

Land(en)

Germany

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