Zobrazeno 1 - 10
of 95
pro vyhledávání: '"Morten Kjærgaard"'
Autor:
Antti Vepsäläinen, Roni Winik, Amir H. Karamlou, Jochen Braumüller, Agustin Di Paolo, Youngkyu Sung, Bharath Kannan, Morten Kjaergaard, David K. Kim, Alexander J. Melville, Bethany M. Niedzielski, Jonilyn L. Yoder, Simon Gustavsson, William D. Oliver
Publikováno v:
Nature Communications, Vol 13, Iss 1, Pp 1-7 (2022)
The presence of various noises in the qubit environment is a major limitation on qubit coherence time. Here, the authors demonstrate the use a closed-loop feedback to stabilize frequency noise in a flux-tunable superconducting qubit and suggest this
Externí odkaz:
https://doaj.org/article/ae1c2a1c49804716a1d8db576a82d8d0
Autor:
Amir H. Karamlou, Jochen Braumüller, Yariv Yanay, Agustin Di Paolo, Patrick M. Harrington, Bharath Kannan, David Kim, Morten Kjaergaard, Alexander Melville, Sarah Muschinske, Bethany M. Niedzielski, Antti Vepsäläinen, Roni Winik, Jonilyn L. Yoder, Mollie Schwartz, Charles Tahan, Terry P. Orlando, Simon Gustavsson, William D. Oliver
Publikováno v:
npj Quantum Information, Vol 8, Iss 1, Pp 1-8 (2022)
Abstract Particle transport and localization phenomena in condensed-matter systems can be modeled using a tight-binding lattice Hamiltonian. The ideal experimental emulation of such a model utilizes simultaneous, high-fidelity control and readout of
Externí odkaz:
https://doaj.org/article/6d5620e008104427a774c83732d77e6a
Autor:
Youngkyu Sung, Antti Vepsäläinen, Jochen Braumüller, Fei Yan, Joel I-Jan Wang, Morten Kjaergaard, Roni Winik, Philip Krantz, Andreas Bengtsson, Alexander J. Melville, Bethany M. Niedzielski, Mollie E. Schwartz, David K. Kim, Jonilyn L. Yoder, Terry P. Orlando, Simon Gustavsson, William D. Oliver
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-9 (2021)
Engineering qubits with long coherence times requires the ability to distinguish multiple noise sources, which is not possible with typical two-level qubit sensors. Here the authors utilize the multiple level transitions of a superconducting qubit to
Externí odkaz:
https://doaj.org/article/fb0badbcc1874995abff41633cca96e1
Publikováno v:
PRX Quantum, Vol 3, Iss 3, p 030329 (2022)
Novel qubits with intrinsic noise protection constitute a promising route for improving the coherence of quantum information in superconducting circuits. However, many protected superconducting qubits exhibit relatively low transition frequencies, wh
Externí odkaz:
https://doaj.org/article/77709f921ee046028c1e5c6941b72254
Autor:
Youngkyu Sung, Leon Ding, Jochen Braumüller, Antti Vepsäläinen, Bharath Kannan, Morten Kjaergaard, Ami Greene, Gabriel O. Samach, Chris McNally, David Kim, Alexander Melville, Bethany M. Niedzielski, Mollie E. Schwartz, Jonilyn L. Yoder, Terry P. Orlando, Simon Gustavsson, William D. Oliver
Publikováno v:
Physical Review X, Vol 11, Iss 2, p 021058 (2021)
High-fidelity two-qubit gates at scale are a key requirement to realize the full promise of quantum computation and simulation. The advent and use of coupler elements to tunably control two-qubit interactions has improved operational fidelity in many
Externí odkaz:
https://doaj.org/article/0c7ac0af40bc48ee8c2aeff5bc7eb781
Autor:
Uwe von Lüpke, Félix Beaudoin, Leigh M. Norris, Youngkyu Sung, Roni Winik, Jack Y. Qiu, Morten Kjaergaard, David Kim, Jonilyn Yoder, Simon Gustavsson, Lorenza Viola, William D. Oliver
Publikováno v:
PRX Quantum, Vol 1, Iss 1, p 010305 (2020)
Noise that exhibits significant temporal and spatial correlations across multiple qubits can be especially harmful to both fault-tolerant quantum computation and quantum-enhanced metrology. However, a complete spectral characterization of the noise e
Externí odkaz:
https://doaj.org/article/121f34d291a841749f29114f7c915878
Autor:
Albert Hertel, Michaela Eichinger, Laurits O. Andersen, David M.T. van Zanten, Sangeeth Kallatt, Pasquale Scarlino, Anders Kringhøj, José M. Chavez-Garcia, Geoffrey C. Gardner, Sergei Gronin, Michael J. Manfra, András Gyenis, Morten Kjaergaard, Charles M. Marcus, Karl D. Petersson
Publikováno v:
Physical Review Applied. 18
We present a gate-voltage tunable transmon qubit (gatemon) based on planar InAs nanowires that are selectively grown on a high resistivity silicon substrate using III-V buffer layers. We show that low loss superconducting resonators with an internal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::749af46f61601ab87bee869edfabdd71
https://doi.org/10.1103/physrevapplied.18.034042
https://doi.org/10.1103/physrevapplied.18.034042
Autor:
Fei Yan, Jochen Braumüller, Alexander Melville, Youngkyu Sung, Roni Winik, Morten Kjaergaard, Philip Krantz, Bethany Niedzielski, Terry P. Orlando, William D. Oliver, Jonilyn Yoder, Simon Gustavsson, Antti Vepsäläinen, David Kim, Joel I-Jan Wang, Mollie Schwartz, Andreas Bengtsson
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-9 (2021)
Nature Communications
Sung, Y, Vepsalainen, A, Braumuller, J, Yan, F, Wang, J I-J, Kjaergaard, M, Winik, R, Krantz, P, Bengtsson, A, Melville, A J, Niedzielski, B M, Schwartz, M E, Kim, D K, Yoder, J L, Orlando, T P, Gustavsson, S & Oliver, W D 2021, ' Multi-level quantum noise spectroscopy ', Nature Communications, vol. 12, no. 1, 967 . https://doi.org/10.1038/s41467-021-21098-3
Nature Communications
Sung, Y, Vepsalainen, A, Braumuller, J, Yan, F, Wang, J I-J, Kjaergaard, M, Winik, R, Krantz, P, Bengtsson, A, Melville, A J, Niedzielski, B M, Schwartz, M E, Kim, D K, Yoder, J L, Orlando, T P, Gustavsson, S & Oliver, W D 2021, ' Multi-level quantum noise spectroscopy ', Nature Communications, vol. 12, no. 1, 967 . https://doi.org/10.1038/s41467-021-21098-3
System noise identification is crucial to the engineering of robust quantum systems. Although existing quantum noise spectroscopy (QNS) protocols measure an aggregate amount of noise affecting a quantum system, they generally cannot distinguish betwe
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1456cbe14eaeb13fd26e2e4e712ecb9d
https://doaj.org/article/fb0badbcc1874995abff41633cca96e1
https://doaj.org/article/fb0badbcc1874995abff41633cca96e1
Autor:
Roni Winik, William D. Oliver, Morten Kjaergaard, Terry P. Orlando, Bethany M. Niedzielski, Antti Vepsäläinen, Jonilyn Yoder, David Kim, Simon Gustavsson, Philip Krantz, Jochen Braumüller, Max Ruckriegel, Daniel Campbell, Alexander Melville, Franco Nori, Anton Frisk Kockum, Bharath Kannan
Publikováno v:
Nature. 583:775-779
Models of light–matter interactions in quantum electrodynamics typically invoke the dipole approximation1,2, in which atoms are treated as point-like objects when compared to the wavelength of the electromagnetic modes with which they interact. How
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0454df3726086b1728ef956b628f1940
https://doi.org/10.1038/s41586-020-2529-9
https://doi.org/10.1038/s41586-020-2529-9
Publikováno v:
Poulsen, K, Majland, M, Lloyd, S, Kjaergaard, M & Zinner, N T 2022, ' Quantum Maxwell's Demon Assisted by Non-Markovian Effects ', Physical Review E, vol. 105, no. 4, 044141 . https://doi.org/10.1103/PhysRevE.105.044141
Poulsen, K, Majland, M, Lloyd, S, Kjaergaard, M & Zinner, N T 2022, ' Quantum Maxwell's demon assisted by non-Markovian effects ', Physical Review E, vol. 105, no. 4, 044141 . https://doi.org/10.1103/PhysRevE.105.044141
Poulsen, K, Majland, M, Lloyd, S, Kjaergaard, M & Zinner, N T 2022, ' Quantum Maxwell's demon assisted by non-Markovian effects ', Physical Review E, vol. 105, no. 4, 044141 . https://doi.org/10.1103/PhysRevE.105.044141
Maxwell's demon is the quintessential example of information control, which is necessary for designing quantum devices. In thermodynamics, the demon is an intelligent being who utilizes the entropic nature of information to sort excitations between r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::60654c8729fcc3002f203c9a02433f40
https://pure.au.dk/portal/da/publications/quantum-maxwells-demon-assisted-by-nonmarkovian-effects(e3425843-3d2b-4ba6-bb30-fc397885e0cf).html
https://pure.au.dk/portal/da/publications/quantum-maxwells-demon-assisted-by-nonmarkovian-effects(e3425843-3d2b-4ba6-bb30-fc397885e0cf).html
