Quantum computers [1–4] are explicitly quantum mechanical systems that use phenomena
such as superposition and entanglement to perform computational tasks more efficiently …

Spin qubits involving individual spins in single quantum dots or coupled spins in double
quantum dots have emerged as potential building blocks for quantum information …

A major goal of developing high-precision control of many-body quantum systems is to
realize their potential as quantum computers. A substantial obstacle to this is the extreme …

Isolated nuclear spins provide a promising building block for quantum information science,
motivating development of techniques to characterize, control, and detect them in suitable …

In building a quantum-information processor (QIP), the challenge is to coherently control a
large quantum system well enough to perform an arbitrary quantum algorithm and to be able …

We present a protocol to evaluate the expectation value of the correlations of measurement
outcomes for ensembles of quantum systems, and use it to experimentally demonstrate …

Quantum controls realize the unitary or nonunitary operations employed in quantum
computers, quantum simulators, quantum communications, and other quantum information …

We experimentally demonstrate multiple rounds of heat-bath algorithmic cooling in a 3 qubit
solid-state nuclear magnetic resonance quantum information processor. By pumping …

Storing information in quantum mechanical degrees of freedom and processing it by unitary
transformation promises a new class of computers that can efficiently solve problems for …

Magnetic resonance techniques provide a powerful tool for controlling spin systems, with
applications ranging from quantum information processing to medical imaging …