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- Nuclear_magnetic_resonance_quantum_computer abstract "NMR quantum computing uses the spin states of molecules as qubits. NMR differs from other implementations of quantum computers in that it uses an ensemble of systems, in this case molecules. The ensemble is initialized to be the thermal equilibrium state (see quantum statistical mechanics). In mathematical parlance, this state is given by the density matrix:where H is the hamiltonian matrix of an individual molecule andwhere is the Boltzmann constant and the temperature.Operations are performed on the ensemble through RF pulses applied perpendicular to a strong, static field, created by a very large magnet. See Nuclear Magnetic Resonance.Some early success was obtained in performing quantum algorithms in NMR systems due to the relative maturity of NMR technology. For instance, in 2001 researchers at IBM reported the successful implementation of Shor's algorithm in a 7-qubit NMR quantum computer.However, even from the early days, it was recognized that NMR quantum computers would never be very useful due to the poor scaling of signal to noise in such systems. More recent work, particularly by Caves and others, shows that all experiments in liquid state bulk ensemble NMR quantum computing to date do not possess quantum entanglement, thought to be required for quantum computation. Hence NMR quantum computing experiments are likely to have been only classical simulations of a quantum computer.".
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- Nuclear_magnetic_resonance_quantum_computer wikiPageID "5080727".
- Nuclear_magnetic_resonance_quantum_computer wikiPageRevisionID "575813238".
- Nuclear_magnetic_resonance_quantum_computer hasPhotoCollection Nuclear_magnetic_resonance_quantum_computer.
- Nuclear_magnetic_resonance_quantum_computer subject Category:Quantum_information_science.
- Nuclear_magnetic_resonance_quantum_computer comment "NMR quantum computing uses the spin states of molecules as qubits. NMR differs from other implementations of quantum computers in that it uses an ensemble of systems, in this case molecules. The ensemble is initialized to be the thermal equilibrium state (see quantum statistical mechanics).".
- Nuclear_magnetic_resonance_quantum_computer label "Nuclear magnetic resonance quantum computer".
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- Nuclear_magnetic_resonance_quantum_computer wasDerivedFrom Nuclear_magnetic_resonance_quantum_computer?oldid=575813238.
- Nuclear_magnetic_resonance_quantum_computer depiction L-alanine-3D-balls.png.
- Nuclear_magnetic_resonance_quantum_computer isPrimaryTopicOf Nuclear_magnetic_resonance_quantum_computer.
