Dark matter search with qubits

by Prof. Hajime Fukuda (University of Tokyo)

Thursday 21 Dec 2023, 10:00 → 12:00 Asia/Shanghai

Tsung-Dao Lee Institute/N6F-N602 - Lecture Room (Tsung-Dao Lee Institute)

Abstract:

 

Recently, quantum technologies have been being developed rapidly and quantum computers with O(100) qubits are becoming available.

We propose to use a type of qubit called transmon qubits to detect dark photon dark matter. A qubit is coherently excited by the

effective electric field of the hidden photon and by measuring the state of the qubit, we may discover the dark photon dark matter with

a mass $m \sim \mu\text{eV}$ and a kinetic mixing with the standard model photon $\epsilon \sim 10^{-(12\mbox{-}13)}$.

We also propose to exploit an entanglement of multiple qubits. Using an appropriate quantum circuit to entangle qubits,

the sensitivity can be improved by $N$, where $N$ is the number of the qubits. We also show that our circuit stabilizes the qubits against

some quantum noises.

 

Bio:
 

2019.3 Ph. D. in physics, University of Tokyo, Japan

2019.4-2019.8 Postdoc, University of Tokyo, Japan

2019.9-2022.3 Postdoc, University of California, Berkeley, USA

2022.4- Assistant Professor, University of Tokyo, Japan 

 Alternative online link:  https://meeting.tencent.com/dm/epGrJ1eEaylS

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