Could one make a diamond-based quantum computer?

Abstract

We assess routes to a diamond-based quantum computer, where we specifically look towards scalable devices, with at least 10 linked quantum gates. Such a computer should satisfy the deVincenzo rules and might be used at convenient temperatures. The specific examples we examine are based on the optical control of electron spins. For some such devices, nuclear spins give additional advantages. Since there have already been demonstrations of basic initialisation and readout, our emphasis is on routes to two-qubit quantum gate operations and the linking of perhaps 10-20 such gates. We analyse the dopant properties necessary, especially centres containing N and P, and give results using simple scoping calculations for the key interactions determining gate performance. Our conclusions are cautiously optimistic: it may be possible to develop a useful quantum information processor that works above cryogenic temperatures.

16 pages, 3 figures

References in corpus (12)

• The nitrogen-vacancy center in diamond re-visited
• Stark shift control of single optical centers in diamond
• Quenching Spin Decoherence in Diamond through Spin Bath Polarization
• Polarization and readout of coupled single spins in diamond
• Excited-state spectroscopy using single-spin manipulation in diamond
• Room-temperature manipulation and decoherence of a single spin in diamond
• Polarization-selective excitation of N-V centers in diamond
• Coherence of Spin Qubits in Silicon
• A multi-frequency high-field pulsed EPR / ENDOR spectrometer
• Coherence of an optically illuminated single nuclear spin qubit
• Efficient Dynamic Nuclear Polarization at High Magnetic Fields
• Entanglement of Remote Spins with Unequal Coupling to an Optically Active Mediator

Cited by in corpus (11)

• High-Resolution Correlation Spectroscopy of 13C Spins Near a Nitrogen-Vacancy Center in Diamond
• Initializing, manipulating and storing quantum information with bismuth dopants in silicon
• Room-temperature high-speed nuclear-spin quantum memory in diamond
• Three-dimensional solid-state qubit arrays with long-lived spin coherence
• Feasibility of efficient room-temperature solid-state sources of indistinguishable single photons using ultrasmall mode volume cavities
• Polarizing the electronic and nuclear spin of the NV-center in diamond in arbitrary magnetic fields: analysis of the optical pumping process
• Analysis of quantum coherence in bismuth-doped silicon: a system of strongly coupled spin qubits
• Practicality of spin chain 'wiring' in diamond quantum technologies
• Hybrid quantum magnetic field sensor with an electron spin and a nuclear spin in diamond
• Non-Abelian geometrical control of a qubit in an NV center in diamond
• Scalable quantum computation architecture using always-on Ising interactions via quantum feedforward