Programmable quantum-state discriminator by nuclear magnetic resonance

Complete quantum teleportation by nuclear magnetic resonance

Quantum mechanics provides spectacular new information processing abilities . One of the most unexpected is a procedure called quantum teleportation 3 that allows the quantum state of a system to be transported from one location to another, without moving through the intervening space. Partial implementations of teleportation 4,5 over macroscopic distances have been achieved using optical systems,

ERRATUM: Solving Quantum Ground-State Problems with Nuclear Magnetic Resonance

Perturbation Approach for Nuclear Magnetic Resonance Solid-state Quantum Computation

A dynamics of a nuclear-spin quantum computer with a large number (L = 1000) of qubits is considered using a perturbation approach. Small parameters are introduced and used to compute the error in an implementation of an entanglement between remote qubits, using a sequence of radio-frequency pulses. The error is computed up to the different orders of the perturbation theory and tested using exa...

Solving Quantum Ground-State Problems with Nuclear Magnetic Resonance

Quantum ground-state problems are computationally hard problems for general many-body Hamiltonians; there is no classical or quantum algorithm known to be able to solve them efficiently. Nevertheless, if a trial wavefunction approximating the ground state is available, as often happens for many problems in physics and chemistry, a quantum computer could employ this trial wavefunction to project...

Nuclear Magnetic Resonance Quantum Computation

Nuclear Magnetic Resonance (NMR) is arguably both the best and the worst technology we have for the implementation of small quantum computers. Its strengths lie in the ease with which arbitrary unitary transformations can be implemented, and the great experimental simplicity arising from the low energy scale and long time scale of radio frequency transitions; its weaknesses lie in the difficult...