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- Title
Maximum Speed of Quantum Gate Operation.
- Authors
Svozil, Karl; Levitin, Lev B.; Toffoli, Tommaso; Walton, Zachary
- Abstract
We consider a quantum gate, driven by a general time-dependent Hamiltonian, that complements the state of a qubit and then adds to it an arbitrary phase shift. It is shown that the minimum operation time of the gate is , where h is Planck's constant, E is the average over time of the quantum-mechanical average energy, and θ is the phase shift modulo π.
- Subjects
HAMILTONIAN operator; HAMILTONIAN systems; DIFFERENTIAL operators; QUANTUM theory; PHYSICS; MECHANICS (Physics)
- Publication
International Journal of Theoretical Physics, 2005, Vol 44, Issue 7, p965
- ISSN
0020-7748
- Publication type
Article
- DOI
10.1007/s10773-005-7073-8