Influence of Non-Resonant Effects on the Dynamics of Quantum Logic Gates at Room Temperature

Simple item page
dc.creatorBerman, G. P.
dc.creatorBishop, A. R.
dc.creatorDoolen, G. D.
dc.creatorLopez, G. V.
dc.creatorTsifrinovich, V. I.
dc.date1999-06-28
dc.date.accessioned2026-07-07T06:16:43Z
dc.date.available2026-07-07T06:16:43Z
dc.descriptionWe study numerically the influence of non-resonant effects on the dynamics of a single $π$-pulse quantum CONTROL-NOT (CN) gate in a macroscopic ensemble of fo ur-spin molecules at room temperature. The four nuclear spins in each molecule r epresent a four-qubit register. The qubits are ``labeled'' by the characteristic frequencies, $ω_k$, ($k=0$ to 3) due to the Zeeman interaction of the nuclear spins with the magnetic field. The qubits interact with each other through an Ising interaction of strength $J$. T he paper examines the feasibility of implementing a single-pulse quantum CN gate in an ensemble of quantum molecules at room temperature. We determine a paramet er region, $ω_k$ and $J$, in which a single-pulse quantum CN gate can be i mplemented at room temperature. We also show that there exist characteristic cri tical values of parameters, $Δω_{cr}\equiv|ω_{k^\prime}-ω_k|_{cr}$ and $J_{cr}$, such that for $J<J_{cr}$ and $Δω_k\equiv|ω_{k^\prime}-ω_k|<Δω_{cr}$, non-resonant effects are sufficient to d estroy the dynamics required for quantum logic operations.
dc.description14 pages, 7 postscript figures
dc.identifierhttps://arxiv.org/abs/quant-ph/9906109
dc.identifierhttp://arxiv.org/abs/quant-ph/9906109
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/94149
dc.subjectQuantum Physics
dc.titleInfluence of Non-Resonant Effects on the Dynamics of Quantum Logic Gates at Room Temperature
dc.typetext

Files

Collections

arXiv