Quantum computing with an electron spin ensemble

Abstract

We propose to encode a register of quantum bits in different collective electron spin wave excitations in a solid medium. Coupling to spins is enabled by locating them in the vicinity of a superconducting transmission line cavity, and making use of their strong collective coupling to the quantized radiation field. The transformation between different spin waves is achieved by applying gradient magnetic fields across the sample, while a Cooper Pair Box, resonant with the cavity field, may be used to carry out one- and two-qubit gate operations.

Several small corrections and modifications. This version is identical to the version published in Phys. Rev. Lett

References in corpus (12)

• Charge insensitive qubit design derived from the Cooper pair box
• Approaching Unit Visibility for Control of a Superconducting Qubit with Dispersive Readout
• Solid state quantum memory using the 31P nuclear spin
• A millisecond quantum memory for scalable quantum networks
• Quantum computing with collective ensembles of multi-level systems
• Magnetism in SQUIDs at Millikelvin Temperatures
• Photon echoes generated by reversing magnetic field gradients in a rubidium vapour
• Holographic quantum computing
• Collective processes of an ensemble of spin-1/2 particles
• Efficient spatially-resolved multimode quantum memory
• Quantum computing with a single molecular ensemble and a Cooper pair box
• The field inside a random distribution of parallel dipoles