Proposal for a coherent quantum memory for propagating microwave photons
Artikel i vetenskaplig tidskrift, 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

superconducting circuits

states

Författare

M. Afzelius

Universite de Geneve

N. Sangouard

Universite de Geneve

Göran Johansson

Chalmers, Mikroteknologi och nanovetenskap (MC2), Tillämpad kvantfysik

Matthias Staudt

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

Christopher Wilson

Chalmers, Mikroteknologi och nanovetenskap (MC2), Kvantkomponentfysik

New Journal of Physics

1367-2630 (ISSN)

Vol. 15 Art. no. 065008- 065008

Ämneskategorier

Fysik

DOI

10.1088/1367-2630/15/6/065008