Results 91 to 100 of about 374,177 (189)

NMR quantum computation [PDF]

Progress in Nuclear Magnetic Resonance Spectroscopy, 2001
AbstractFor Abstract see ChemInform Abstract in Full Text.
openaire   +2 more sources

Conservative Quantum Computing [PDF]

Physical Review Letters, 2002
Conservation laws limit the accuracy of physical implementations of elementary quantum logic gates. If the computational basis is represented by a component of spin and physical implementations obey the angular momentum conservation law, any physically realizable unitary operators with size less than n qubits cannot implement the controlled-NOT gate ...
openaire   +3 more sources

Microwave-free nuclear magnetic resonance at molecular scales

Nature Communications, 2017
Nitrogen vacancy centres can be used for nanoscale nuclear magnetic resonance detection but this typically involves strong microwave control pulses, making practical realizations difficult.
James D. A. Wood, Jean-Philippe Tetienne, David A. Broadway, Liam T. Hall, David A. Simpson, Alastair Stacey, Lloyd C. L. Hollenberg   +6 more
doaj   +1 more source

Fault-tolerant quantum computation [PDF]

, 1996
Recently, it was realized that use of the properties of quantum mechanics might speed up certain computations dramatically. Interest in quantum computation has since been growing.
Shor, Peter W.
core   +5 more sources

Quantum state smoothing: why the types of observed and unobserved measurements matter

New Journal of Physics, 2019
We investigate the estimation technique called quantum state smoothing introduced in (Guevara and Wiseman 2015 Phys. Rev. Lett. 115 180407), which offers a valid quantum state estimate for a partially monitored system, conditioned on the observed record ...
Areeya Chantasri, Ivonne Guevara, Howard M Wiseman   +2 more
doaj   +1 more source

A quantum spin-probe molecular microscope

Nature Communications, 2016
Single spin defects can allow high-resolution sensing of molecules under an applied magnetic field. Here, the authors propose a protocol for three-dimensional magnetic resonance imaging with angstrom-level resolution exploiting the dipolar field of a ...
V. S. Perunicic, C. D. Hill, L. T. Hall, L.C.L. Hollenberg   +3 more
doaj   +1 more source

Toward Quantum Interconnects Featuring Nanometer-to-Picometer Bandwidth Compression and THz-Range Quantum Frequency Conversion

IEEE Photonics Journal
The long-range transmission of quantum information relies on multiple interfaces between photons, acting as flying qubits, and localized memories, serving as repeaters, to mitigate transmission losses.
Tim F. Weiss, Alberto Peruzzo
doaj   +1 more source

Single-spin qubits in isotopically enriched silicon at low magnetic field

Nature Communications, 2019
One of the main sources of decoherence in silicon electron spin qubits is their interaction with nearby fluctuating nuclear spins. Zhao et al. present a device made from enriched silicon to reduce the nuclear spin density and find its performance is ...
R. Zhao, T. Tanttu, K. Y. Tan, B. Hensen, K. W. Chan, J. C. C. Hwang, R. C. C. Leon, C. H. Yang, W. Gilbert, F. E. Hudson, K. M. Itoh, A. A. Kiselev, T. D. Ladd, A. Morello, A. Laucht, A. S. Dzurak   +15 more
doaj   +1 more source

Quantum Chaos & Quantum Computers

, 2000
The standard generic quantum computer model is studied analytically and numerically and the border for emergence of quantum chaos, induced by imperfections and residual inter-qubit couplings, is determined. This phenomenon appears in an isolated quantum computer without any external decoherence.
openaire   +3 more sources

Noise-agnostic quantum error mitigation with data augmented neural models

npj Quantum Information
Quantum error mitigation, a data processing technique for recovering the statistics of target processes from their noisy version, is a crucial task for near-term quantum technologies.
Manwen Liao, Yan Zhu, Giulio Chiribella, Yuxiang Yang   +3 more
doaj   +1 more source