scholarly journals Universal quantum logic gates in a scalable Ising spin quantum computer

2008 ◽  
Vol 372 (32) ◽  
pp. 5270-5273 ◽  
Author(s):  
G.F. Mkrtchian
Keyword(s):  
Quantum Logic ◽  
Quantum Computer ◽  
Logic Gates ◽  
Quantum Logic Gates ◽  
Ising Spin ◽  
Spin Quantum ◽  
Universal Quantum

scholarly journals METHOD FOR IMPLEMENTATION OF UNIVERSAL QUANTUM LOGIC GATES IN A SCALABLE ISING SPIN QUANTUM COMPUTER

2003 ◽  
Vol 01 (01) ◽  
pp. 51-77 ◽  
Author(s):  
G. P. BERMAN ◽  
D. I. KAMENEV ◽  
R. B. KASSMAN ◽  
C. PINEDA ◽  
V. I. TSIFRINOVICH
Keyword(s):  
Radio Frequency ◽  
Quantum Computer ◽  
Logic Gates ◽  
Quantum States ◽  
Quantum Gates ◽  
Quantum Logic Gates ◽  
Ising Spin ◽  
Spin Quantum ◽  
Universal Quantum ◽  
Radio Frequency Pulses

We present protocols for implementation of universal quantum gates on an arbitrary superposition of quantum states in a scalable solid-state Ising spin quantum computer. The spin chain is composed of identical spins 1/2 with the Ising interaction between the neighboring spins. The selective excitations of the spins are provided by the gradient of the external magnetic field. The protocols are built of rectangular radio-frequency pulses. Since the wavelength of the radio-frequency pulses is much larger than the distance between the spins, each pulse affects all spins in the chain and introduces the phase and probability errors, which occur even without the influence of the environment. These errors caused by the unwanted transitions are minimized and computed numerically.

Quantum Computing I

2020 ◽  
pp. 229-244
Author(s):  
M. Suhail Zubairy
Keyword(s):  
Quantum Logic ◽  
Quantum Teleportation ◽  
Quantum Computer ◽  
Logic Gates ◽  
Building Blocks ◽  
Quantum Mechanical ◽  
Quantum Dense Coding ◽  
Quantum Logic Gates ◽  
Probabilistic Nature ◽  
Conventional Computer

A remarkable application of quantum mechanical concepts of coherent superposition and quantum entanglement is a quantum computer which can solve certain problems at speeds unbelievably faster than the conventional computer. In this chapter, the basic principles and the conditions for the implementation of the quantum computer are introduced and the limitations imposed by the probabilistic nature of quantum mechanics and the inevitable decoherence phenomenon are discussed. Next the basic building blocks, the quantum logic gates, are introduced. These include the Hadamard, the CNOT, and the quantum phase gates. After these preliminaries, the implementation of the Deutsch algorithm, quantum teleportation, and quantum dense coding in terms of the quantum logic gates are discussed. It is also shown how the Bell states can be produced and measured using a sequence of quantum logic gates.

scholarly journals Quantum supremacy in end-to-end intelligent IT. PT. III. Quantum software engineering – quantum approximate optimization algorithm on small quantum processors

2020 ◽  
pp. 115-176
Author(s):  
Olga Ivancova ◽  
Vladimir Korenkov ◽  
Olga Tyatyushkina ◽  
Sergey Ulyanov ◽  
Toshio Fukuda
Keyword(s):  
Quantum Computer ◽  
Quantum Algorithms ◽  
Quantum Algorithm ◽  
Logic Gates ◽  
Circuit Implementation ◽  
New Approach ◽  
Quantum Logic Gates ◽  
Small Quantum ◽  
Universal Quantum ◽  
Arbitrary Quantum

Principles and methodologies of quantum algorithmic gate-based design on small quantum computer described. The possibilities of quantum algorithmic gates simulation on classical computers discussed. A new approach to a circuit implementation design of quantum algorithm gates for fast quantum massive parallel computing presented. SW & HW support sophisticated smart toolkit of supercomputing accelerator of quantum algorithm simulation on small quantum programmable computer algorithm gate (that can program in SW to implement arbitrary quantum algorithms by executing any sequence of universal quantum logic gates) described

Realizable Universal Quantum Logic Gates

1995 ◽  
Vol 74 (20) ◽  
pp. 4087-4090 ◽  
Author(s):  
Tycho Sleator ◽  
Harald Weinfurter
Keyword(s):  
Quantum Logic ◽  
Logic Gates ◽  
Quantum Logic Gates ◽  
Universal Quantum
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