Quantum Computation with Phase Drift Errors
نویسندگان
چکیده
منابع مشابه
Quantum computation with phase drift errors
César Miquel1,2,3∗, Juan Pablo Paz † and Wojciech Hubert Zurek 1,3‡ Institute for Theoretical Physics, University of California, Santa Barbara, CA 93106–4030, USA Departamento de F́ısica “J.J. Giambiagi”, FCEN, UBA, Pabellón 1, Ciudad Universitaria, 1428 Buenos Aires, Argentina Theoretical Astrophysics, MSB288, Los Alamos National Laboratory, Los Alamos, NM 87545, USA Instituto de Astronomı́a y F́...
متن کاملPauli exchange errors in quantum computation
In many physically realistic models of quantum computation, Pauli exchange interactions cause a subset of 2-qubit errors to occur as a first-order effect of couplings within the computer, even in the absence of interactions with the computer's environment. We give an explicit 9-qubit code that corrects both Pauli exchange errors and all 1-qubit errors.
متن کاملClassical versus quantum errors in quantum computation of dynamical systems.
We analyze the stability of a quantum algorithm simulating the quantum dynamics of a system with different regimes, ranging from global chaos to integrability. We compare, in these different regimes, the behavior of the fidelity of quantum motion when the system's parameters are perturbed or when there are unitary errors in the quantum gates implementing the quantum algorithm. While the first k...
متن کاملWhen quantum tomography goes wrong: drift of quantum sources and other errors
The principle behind quantum tomography is that a large set of observations—many samples from a ‘quorum’ of distinct observables—can all be explained satisfactorily as measurements on a single underlying quantum state or process. Unfortunately, this principle may not hold. When it fails, any standard tomographic estimate should be viewed skeptically. Here we propose a simple way to test for thi...
متن کاملFirst Order Quantum Phase Transition in Adiabatic Quantum Computation
We investigate the connection between local minima in the problem Hamiltonian and first order quantum phase transitions during an adiabatic quantum computation. We demonstrate how some properties of the local minima can lead to an extremely small gap that is exponentially sensitive to the Hamiltonian parameters. Using perturbation expansion, we derive an analytical formula that can not only pre...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Physical Review Letters
سال: 1997
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.78.3971