منابع مشابه
Implementation of Single-Qutrit Quantum Gates via Tripod Adiabatic Passage
We proposed and analyzed implementation of the single-qutrit quantum gates based on stimulated Raman adiabatic passage (STIRAP) between magnetic sublevels in atoms coupled by pulsed laser fields. This technique requires only the control of the relative phase of the driving fields but do not involve any dynamical or geometrical phases, which make it independent of the other interaction details: ...
متن کاملQuantum Walks, Quantum Gates, and Quantum Computers
The physics of quantum walks on graphs is formulated in Hamiltonian language, both for simple quantum walks and for composite walks, where extra discrete degrees of freedom live at each node of the graph. It is shown how to map between quantum walk Hamiltonians and Hamiltonians for qubit systems and quantum circuits; this is done for both a singleand multi-excitation coding, and for more genera...
متن کاملUniversal Quantum Gates
In this paper we study universality for quantum gates acting on qudits. Qudits are states in a Hilbert space of dimension d where d can be any integer ≥ 2. We determine which 2-qudit gates V have the properties (i) the collection of all 1-qudit gates together with V produces all n-qudit gates up to arbitrary precision, or (ii) the collection of all 1-qudit gates together with V produces all n-q...
متن کاملChapter 2 Quantum Gates
“When we get to the very, very small world—say circuits of seven atoms—we have a lot of new things that would happen that represent completely new opportunities for design. Atoms on a small scale behave like nothing on a large scale, for they satisfy the laws of quantum mechanics. So, as we go down and fiddle around with the atoms down there, we are working with different laws, and we can expec...
متن کاملUniversal Quantum Gates
For classical circuits, both {AND, NOT} and the single-gate set {NAND} are universal. To nd universal sets of quantum gates, we use the quantum circuit model, in which each gate is represented by a 2 by 2 unitary matrix. Composition of gates is done by multiplying these matrices. The space of operations generated by a set of gates is a subgroup of the unitary group U (2) (or SU (2), ignoring gl...
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: Nature Electronics
سال: 2018
ISSN: 2520-1131
DOI: 10.1038/s41928-018-0051-y