[22a-H101-1~9] Cavity & circuit-QED: frontier research at the leading edge

[22a-H101-6] Circuit-QED and Spins: Quatum Memory and Magnetic Resonance

〇Yuimaru Kubo^1,2, Cecile Grazes¹, Audrey Bienfait¹, Junichi Isoya³, Denis Vion¹, Daniel Esteve¹, Patrice Bertet¹ (1.CEA-Saclay, 2.OIST, 3.Univ. of Tsukuba)

Keywords:Hybrid Quantum Systems,Quantum Information Science,Magnetic Resonance

I will present hybrid quantum systems consisting of spins and superconducting quantum cirucuits. We demonstrated that electron spins of NV-centers in diamond can be used as a quamtum memory (Quantum RAM) for superconducting qubits (Quantum CPU). Quantum states of microwave photons were transferred to, stored in, and retrieved back from the Quantum RAM [1, 2].
I will also present our recent demonstration of ultra-sensitive electron spin resonance (ESR) spectometer exploiting the technologies of circuit-QED. We detected electron spins with unprecedented sensitivity ever rearched, which is more than four orders of magnitude better than the state-of-the-art reported to date[3]. We further demonstrated the control of sponteneous emission of spins in solids for the first time [4].