8 citations · 8 across the 2 of their papers we have counts for
3 papers
Maximum speed of quantum gate operation
Lev B. Levitin, Tommaso Toffoli, Zachary Walton
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…
Operation Time of Quantum Gates
Lev B. Levitin, Tommaso Toffoli, Zachary Walton
We consider a quantum gate 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 tau = (h/4…
Information and Distinguishability of Ensembles of Identical Quantum States
Lev B. Levitin, Tommaso Toffoli, Zac D. Walton
We consider a fixed quantum measurement performed over identical copies of quantum states. Using a rigorous notion of distinguishability We consider a fixed quantum measurement…