Search Results - "Cleland, A. N"

Quantum ground state and single-phonon control of a mechanical resonator by Cleland, A. N, O’Connell, A. D, Hofheinz, M, Ansmann, M, Bialczak, Radoslaw C, Lenander, M, Lucero, Erik, Neeley, M, Sank, D, Wang, H, Weides, M, Wenner, J, Martinis, John M

“…Quantum mechanics provides a highly accurate description of a wide variety of physical systems. However, a demonstration that quantum mechanics applies equally…”
Get full text

Bi-directional conversion between microwave and optical frequencies in a piezoelectric optomechanical device by Vainsencher, Amit, Satzinger, K. J., Peairs, G. A., Cleland, A. N.

“…We describe the principles of design, fabrication, and operation of a piezoelectric optomechanical crystal with which we demonstrate bi-directional conversion…”
Get full text

Generation of three-qubit entangled states using superconducting phase qubits by Martinis, John M, Neeley, Matthew, Bialczak, Radoslaw C, Lenander, M, Lucero, E, Mariantoni, Matteo, O'Connell, A. D, Sank, D, Wang, H, Weides, M, Wenner, J, Yin, Y, Yamamoto, T, Cleland, A. N

“…Entanglement is one of the key resources required for quantum computation, so the experimental creation and measurement of entangled states is of crucial…”
Get full text

Proposal for a Nanomechanical Qubit by Pistolesi, F., Cleland, A. N., Bachtold, A.

“…Mechanical oscillators have been demonstrated with very high quality factors over a wide range of frequencies. They also couple to a wide variety of fields and…”
Get full text

Phonon-mediated quantum state transfer and remote qubit entanglement by Bienfait, A, Satzinger, K J, Zhong, Y P, Chang, H-S, Chou, M-H, Conner, C R, Dumur, É, Grebel, J, Peairs, G A, Povey, R G, Cleland, A N

“…Phonons, and in particular surface acoustic wave phonons, have been proposed as a means to coherently couple distant solid-state quantum systems. Individual…”
Get full text

Synthesizing arbitrary quantum states in a superconducting resonator by Lucero, Erik, Wenner, J, Cleland, A. N, Wang, H, O'Connell, A. D, Bialczak, Radoslaw C, Hofheinz, Max, Sank, D, Neeley, M, Martinis, John M, Ansmann, M

“…The superposition principle is a fundamental tenet of quantum mechanics. It allows a quantum system to be 'in two places at the same time', because the quantum…”
Get full text

Qubit Architecture with High Coherence and Fast Tunable Coupling by Chen, Yu, Neill, C, Roushan, P, Leung, N, Fang, M, Barends, R, Kelly, J, Campbell, B, Chen, Z, Chiaro, B, Dunsworth, A, Jeffrey, E, Megrant, A, Mutus, J Y, O'Malley, P J J, Quintana, C M, Sank, D, Vainsencher, A, Wenner, J, White, T C, Geller, Michael R, Cleland, A N, Martinis, John M

“…We introduce a superconducting qubit architecture that combines high-coherence qubits and tunable qubit-qubit coupling. With the ability to set the coupling to…”
Get full text

Fast accurate state measurement with superconducting qubits by Jeffrey, Evan, Sank, Daniel, Mutus, J Y, White, T C, Kelly, J, Barends, R, Chen, Y, Chen, Z, Chiaro, B, Dunsworth, A, Megrant, A, O'Malley, P J J, Neill, C, Roushan, P, Vainsencher, A, Wenner, J, Cleland, A N, Martinis, John M

“…Faster and more accurate state measurement is required for progress in superconducting qubit experiments with greater numbers of qubits and advanced techniques…”
Get full text

Implementing the Quantum von Neumann Architecture with Superconducting Circuits by Mariantoni, Matteo, Wang, H., Yamamoto, T., Neeley, M., Bialczak, Radoslaw C., Chen, Y., Lenander, M., Lucero, Erik, O'Connell, A. D., Sank, D., Weides, M., Wenner, J., Yin, Y., Zhao, J., Korotkov, A. N., Cleland, A. N., Martinis, John M.

“…The von Neumann architecture for a classical computer comprises a central processing unit and a memory holding instructions and data. We demonstrate a quantum…”
Get full text

Generation of Fock states in a superconducting quantum circuit by Cleland, A. N, Hofheinz, Max, Weig, E. M, Ansmann, M, Bialczak, Radoslaw C, Lucero, Erik, Neeley, M, O'Connell, A. D, Wang, H, Martinis, John M

“…Spin systems and harmonic oscillators comprise two archetypes in quantum mechanics. The spin-1/2 system, with two quantum energy levels, is essentially the…”
Get full text

Remote Entanglement via Adiabatic Passage Using a Tunably Dissipative Quantum Communication System by Chang, H.-S., Zhong, Y. P., Bienfait, A., Chou, M.-H., Conner, C. R., Dumur, É., Grebel, J., Peairs, G. A., Povey, R. G., Satzinger, K. J., Cleland, A. N.

“…Effective quantum communication between remote quantum nodes requires high fidelity quantum state transfer and remote entanglement generation. Recent…”
Get full text

Observation of topological transitions in interacting quantum circuits by Roushan, P., Neill, C., Chen, Yu, Kolodrubetz, M., Quintana, C., Leung, N., Fang, M., Barends, R., Campbell, B., Chen, Z., Chiaro, B., Dunsworth, A., Jeffrey, E., Kelly, J., Megrant, A., Mutus, J., O’Malley, P. J. J., Sank, D., Vainsencher, A., Wenner, J., White, T., Polkovnikov, A., Cleland, A. N., Martinis, J. M.

“…Superconducting quantum circuits are used to directly observe and characterize topological phase transitions; this approach promises to be a powerful and…”
Get full text

Optimal quantum control using randomized benchmarking by Kelly, J, Barends, R, Campbell, B, Chen, Y, Chen, Z, Chiaro, B, Dunsworth, A, Fowler, A G, Hoi, I-C, Jeffrey, E, Megrant, A, Mutus, J, Neill, C, O'Malley, P J J, Quintana, C, Roushan, P, Sank, D, Vainsencher, A, Wenner, J, White, T C, Cleland, A N, Martinis, John M

“…We present a method for optimizing quantum control in experimental systems, using a subset of randomized benchmarking measurements to rapidly infer error. This…”
Get full text

Violation of Bell's inequality in Josephson phase qubits by Martinis, John M, Ansmann, Markus, Wang, H, Bialczak, Radoslaw C, Hofheinz, Max, Lucero, Erik, Neeley, M, O'Connell, A. D, Sank, D, Weides, M, Wenner, J, Cleland, A. N

“…The measurement process plays an awkward role in quantum mechanics, because measurement forces a system to 'choose' between possible outcomes in a…”
Get full text

Noise-enabled precision measurements of a duffing nanomechanical resonator by ALDRIDGE, J. S, CLELAND, A. N

“…We report quantitative measurements of the nonlinear response of a radio frequency mechanical resonator with a very high quality factor. We measure the…”
Get full text

Quantum process tomography of a universal entangling gate implemented with Josephson phase qubits by Lucero, E, Wenner, J, Bialczak, R. C, O'Connell, A. D, Wang, H, Cleland, A. N, Sank, D, Martinis, J. M, Neeley, M, Hofheinz, M, Steffen, M, Ansmann, M

“…Quantum gates must perform reliably when operating on standard input basis states and on complex superpositions thereof. Experiments using superconducting…”
Get full text

Measurement of the Entanglement of Two Superconducting Qubits via State Tomography by Steffen, Matthias, Ansmann, M., Bialczak, Radoslaw C., Katz, N., Lucero, Erik, McDermott, R., Neeley, Matthew, Weig, E. M., Cleland, A. N., Martinis, John M.

“…Demonstration of quantum entanglement, a key resource in quantum computation arising from a nonclassical correlation of states, requires complete measurement…”
Get full text

Catch and release of microwave photon states by Yin, Yi, Chen, Yu, Sank, Daniel, O'Malley, P J J, White, T C, Barends, R, Kelly, J, Lucero, Erik, Mariantoni, Matteo, Megrant, A, Neill, C, Vainsencher, A, Wenner, J, Korotkov, Alexander N, Cleland, A N, Martinis, John M

“…We demonstrate a superconducting resonator with variable coupling to a measurement transmission line. The resonator coupling can be adjusted through zero to a…”
Get full text

Process tomography of quantum memory in a Josephson-phase qubit coupled to a two-level state by Martinis, John M, Neeley, Matthew, Ansmann, M, Bialczak, Radoslaw C, Hofheinz, M, Katz, N, Lucero, Erik, O'Connell, A, Wang, H, Cleland, A. N

“…A quantum computer will require quantum bits (qubits) with good coherence that can be coupled together to form logic gates. Superconducting circuits offer a…”
Get full text

Strong environmental coupling in a Josephson parametric amplifier by Mutus, J. Y., White, T. C., Barends, R., Chen, Yu, Chen, Z., Chiaro, B., Dunsworth, A., Jeffrey, E., Kelly, J., Megrant, A., Neill, C., O'Malley, P. J. J., Roushan, P., Sank, D., Vainsencher, A., Wenner, J., Sundqvist, K. M., Cleland, A. N., Martinis, John M.

“…We present a lumped-element Josephson parametric amplifier designed to operate with strong coupling to the environment. In this regime, we observe broadband…”
Get full text