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Your search keyword '"Dunsworth, A."' showing total 10 results
Start Over Author "Dunsworth, A." Journal applied physics letters
10 results on '"Dunsworth, A."'

1. Readout of a quantum processor with high dynamic range Josephson parametric amplifiers

Author

White, Theodore, primary, Opremcak, Alex, additional, Sterling, George, additional, Korotkov, Alexander, additional, Sank, Daniel, additional, Acharya, Rajeev, additional, Ansmann, Markus, additional, Arute, Frank, additional, Arya, Kunal, additional, Bardin, Joseph C., additional, Bengtsson, Andreas, additional, Bourassa, Alexandre, additional, Bovaird, Jenna, additional, Brill, Leon, additional, Buckley, Bob B., additional, Buell, David A., additional, Burger, Tim, additional, Burkett, Brian, additional, Bushnell, Nicholas, additional, Chen, Zijun, additional, Chiaro, Ben, additional, Cogan, Josh, additional, Collins, Roberto, additional, Crook, Alexander L., additional, Curtin, Ben, additional, Demura, Sean, additional, Dunsworth, Andrew, additional, Erickson, Catherine, additional, Fatemi, Reza, additional, Burgos, Leslie Flores, additional, Forati, Ebrahim, additional, Foxen, Brooks, additional, Giang, William, additional, Giustina, Marissa, additional, Grajales Dau, Alejandro, additional, Hamilton, Michael C., additional, Harrington, Sean D., additional, Hilton, Jeremy, additional, Hoffmann, Markus, additional, Hong, Sabrina, additional, Huang, Trent, additional, Huff, Ashley, additional, Iveland, Justin, additional, Jeffrey, Evan, additional, Kieferová, Mária, additional, Kim, Seon, additional, Klimov, Paul V., additional, Kostritsa, Fedor, additional, Kreikebaum, John Mark, additional, Landhuis, David, additional, Laptev, Pavel, additional, Laws, Lily, additional, Lee, Kenny, additional, Lester, Brian J., additional, Lill, Alexander, additional, Liu, Wayne, additional, Locharla, Aditya, additional, Lucero, Erik, additional, McCourt, Trevor, additional, McEwen, Matt, additional, Mi, Xiao, additional, Miao, Kevin C., additional, Montazeri, Shirin, additional, Morvan, Alexis, additional, Neeley, Matthew, additional, Neill, Charles, additional, Nersisyan, Ani, additional, Ng, Jiun How, additional, Nguyen, Anthony, additional, Nguyen, Murray, additional, Potter, Rebecca, additional, Quintana, Chris, additional, Roushan, Pedram, additional, Sankaragomathi, Kannan, additional, Satzinger, Kevin J., additional, Schuster, Christopher, additional, Shearn, Michael J., additional, Shorter, Aaron, additional, Shvarts, Vladimir, additional, Skruzny, Jindra, additional, Smith, W. Clarke, additional, Szalay, Marco, additional, Torres, Alfredo, additional, Woo, Bryan W. K., additional, Yao, Z. Jamie, additional, Yeh, Ping, additional, Yoo, Juhwan, additional, Young, Grayson, additional, Zhu, Ningfeng, additional, Zobrist, Nicholas, additional, Chen, Yu, additional, Megrant, Anthony, additional, Kelly, Julian, additional, and Naaman, Ofer, additional

Published
2023
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2. A method for building low loss multi-layer wiring for superconducting microwave devices

Author

Dunsworth, A., primary, Barends, R., additional, Chen, Yu, additional, Chen, Zijun, additional, Chiaro, B., additional, Fowler, A., additional, Foxen, B., additional, Jeffrey, E., additional, Kelly, J., additional, Klimov, P. V., additional, Lucero, E., additional, Mutus, J. Y., additional, Neeley, M., additional, Neill, C., additional, Quintana, C., additional, Roushan, P., additional, Sank, D., additional, Vainsencher, A., additional, Wenner, J., additional, White, T. C., additional, Neven, H., additional, Martinis, John M., additional, and Megrant, A., additional

Published
2018
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3. A method for building low loss multi-layer wiring for superconducting microwave devices

Author

Josh Mutus, E. Lucero, Chris Quintana, James Wenner, Julian Kelly, Daniel Sank, Anthony Megrant, Zijun Chen, Matthew Neeley, Brooks Foxen, Evan Jeffrey, Charles Neill, Yu Chen, Amit Vainsencher, Paul V. Klimov, Andrew Dunsworth, John M. Martinis, Ted White, Ben Chiaro, Rami Barends, Pedram Roushan, Hartmut Neven, and Austin G. Fowler

Subjects
Coupling, Fabrication, Materials science, Physics and Astronomy (miscellaneous), business.industry, Coplanar waveguide, Capacitive sensing, 02 engineering and technology, Dielectric, Integrated circuit, 021001 nanoscience & nanotechnology, 01 natural sciences, law.invention, Resonator, law, 0103 physical sciences, Optoelectronics, 010306 general physics, 0210 nano-technology, business, Microwave
Abstract

Complex integrated circuits require multiple wiring layers. In complementary metal-oxide-semiconductor processing, these layers are robustly separated by amorphous dielectrics. These dielectrics would dominate energy loss in superconducting integrated circuits. Here, we describe a procedure that capitalizes on the structural benefits of inter-layer dielectrics during fabrication and mitigates the added loss. We use a deposited inter-layer dielectric throughout fabrication and then etch it away post-fabrication. This technique is compatible with foundry level processing and can be generalized to make many different forms of low-loss wiring. We use this technique to create freestanding aluminum vacuum gap crossovers (airbridges). We characterize the added capacitive loss of these airbridges by connecting ground planes over microwave frequency λ/4 coplanar waveguide resonators and measuring resonator loss. We measure a low power resonator loss of ∼3.9 × 10−8 per bridge, which is 100 times lower than that of dielectric supported bridges. We further characterize these airbridges as crossovers, control line jumpers, and as part of a coupling network in gmon and fluxmon qubits. We measure qubit characteristic lifetimes (T1s) in excess of 30 μs in gmon devices.

Published
2018
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4. Characterization and reduction of capacitive loss induced by sub-micron Josephson junction fabrication in superconducting qubits

Author

Dunsworth, A., primary, Megrant, A., additional, Quintana, C., additional, Chen, Zijun, additional, Barends, R., additional, Burkett, B., additional, Foxen, B., additional, Chen, Yu, additional, Chiaro, B., additional, Fowler, A., additional, Graff, R., additional, Jeffrey, E., additional, Kelly, J., additional, Lucero, E., additional, Mutus, J. Y., additional, Neeley, M., additional, Neill, C., additional, Roushan, P., additional, Sank, D., additional, Vainsencher, A., additional, Wenner, J., additional, White, T. C., additional, and Martinis, John M., additional

Published
2017
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5. Traveling wave parametric amplifier with Josephson junctions using minimal resonator phase matching

Author

White, T. C., primary, Mutus, J. Y., additional, Hoi, I.-C., additional, Barends, R., additional, Campbell, B., additional, Chen, Yu, additional, Chen, Z., additional, Chiaro, B., additional, Dunsworth, A., additional, Jeffrey, E., additional, Kelly, J., additional, Megrant, A., additional, Neill, C., additional, O'Malley, P. J. J., additional, Roushan, P., additional, Sank, D., additional, Vainsencher, A., additional, Wenner, J., additional, Chaudhuri, S., additional, Gao, J., additional, and Martinis, John M., additional

Published
2015
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6. Characterization and reduction of microfabrication-induced decoherence in superconducting quantum circuits

Author

Quintana, C. M., primary, Megrant, A., additional, Chen, Z., additional, Dunsworth, A., additional, Chiaro, B., additional, Barends, R., additional, Campbell, B., additional, Chen, Yu, additional, Hoi, I.-C., additional, Jeffrey, E., additional, Kelly, J., additional, Mutus, J. Y., additional, O'Malley, P. J. J., additional, Neill, C., additional, Roushan, P., additional, Sank, D., additional, Vainsencher, A., additional, Wenner, J., additional, White, T. C., additional, Cleland, A. N., additional, and Martinis, John M., additional

Published
2014
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7. Strong environmental coupling in a Josephson parametric amplifier

Author

Mutus, J. Y., primary, White, T. C., additional, Barends, R., additional, Chen, Yu, additional, Chen, Z., additional, Chiaro, B., additional, Dunsworth, A., additional, Jeffrey, E., additional, Kelly, J., additional, Megrant, A., additional, Neill, C., additional, O'Malley, P. J. J., additional, Roushan, P., additional, Sank, D., additional, Vainsencher, A., additional, Wenner, J., additional, Sundqvist, K. M., additional, Cleland, A. N., additional, and Martinis, John M., additional

Published
2014
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8. Fabrication and characterization of aluminum airbridges for superconducting microwave circuits

Author

Chen, Zijun, primary, Megrant, A., additional, Kelly, J., additional, Barends, R., additional, Bochmann, J., additional, Chen, Yu, additional, Chiaro, B., additional, Dunsworth, A., additional, Jeffrey, E., additional, Mutus, J. Y., additional, O'Malley, P. J. J., additional, Neill, C., additional, Roushan, P., additional, Sank, D., additional, Vainsencher, A., additional, Wenner, J., additional, White, T. C., additional, Cleland, A. N., additional, and Martinis, John M., additional

Published
2014
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9. Design and characterization of a lumped element single-ended superconducting microwave parametric amplifier with on-chip flux bias line

Author

Mutus, J. Y., primary, White, T. C., additional, Jeffrey, E., additional, Sank, D., additional, Barends, R., additional, Bochmann, J., additional, Chen, Yu, additional, Chen, Z., additional, Chiaro, B., additional, Dunsworth, A., additional, Kelly, J., additional, Megrant, A., additional, Neill, C., additional, O'Malley, P. J. J., additional, Roushan, P., additional, Vainsencher, A., additional, Wenner, J., additional, Siddiqi, I., additional, Vijay, R., additional, Cleland, A. N., additional, and Martinis, John M., additional

Published
2013
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10. Fabrication and characterization of aluminum airbridges for superconducting microwave circuits.

Author

Zijun Chen, Megrant, A., Kelly, J., Barends, R., Bochmann, J., Yu Chen, Chiaro, B., Dunsworth, A., Jeffrey, E., Mutus, J. Y., O'Malley, P. J. J., Neill, C., Roushan, P., Sank, D., Vainsencher, A., Wenner, J., White, T. C., Cleland, A. N., and Martinis, John M.

Subjects
MICROWAVE circuits, WAVEGUIDES, MICROFABRICATION, MICROWAVE devices, RESONATORS, SUPERCONDUCTORS
Abstract

Superconducting microwave circuits based on coplanar waveguides (CPW) are susceptible to parasitic slotline modes which can lead to loss and decoherence. We motivate the use of superconducting airbridges as a reliable method for preventing the propagation of these modes. We describe the fabrication of these airbridges on superconducting resonators, which we use to measure the loss due to placing airbridges over CPW lines. We find that the additional loss at single photon levels is small, and decreases at higher drive powers. [ABSTRACT FROM AUTHOR]

Published
2014
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