Proposal for a coherent quantum memory for propagating microwave photons
Journal article, 2013

We describe a multi-mode quantum memory for propagating microwave photons that combines a solid-state spin ensemble resonantly coupled to a frequency tunable single-mode microwave cavity. We first show that high efficiency mapping of the quantum state transported by a free photon to the spin ensemble is possible both for strong and weak coupling between the cavity mode and the spin ensemble. We also show that even in the weak coupling limit unit efficiency and faithful retrieval can be obtained through time reversal inhomogeneous dephasing based on spin echo techniques. This is possible provided that the cavity containing the spin ensemble and the transmission line are impedance matched. We finally discuss the prospects for an experimental implementation using a rare-earth doped crystal coupled to a superconducting resonator.

qubits

states

superconducting circuits

Author

M. Afzelius

University of Geneva

N. Sangouard

University of Geneva

Göran Johansson

Chalmers, Microtechnology and Nanoscience (MC2), Applied Quantum Physics

Matthias Staudt

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

Christopher Wilson

Chalmers, Microtechnology and Nanoscience (MC2), Quantum Device Physics

New Journal of Physics

1367-2630 (ISSN)

Vol. 15 Art. no. 065008- 065008

Quantum Propagating Microwaves in Strongly Coupled Environments (PROMISCE)

European Commission (FP7), 2012-04-01 -- 2015-03-31.

Subject Categories

Physical Sciences

DOI

10.1088/1367-2630/15/6/065008

More information

Latest update

6/15/2018