Zobrazeno 1 - 10
of 53
pro vyhledávání: '"Quijandria, Fernando"'
Autor:
Kervinen, Mikael, Ahmed, Shahnawaz, Kudra, Marina, Eriksson, Axel, Quijandría, Fernando, Kockum, Anton Frisk, Delsing, Per, Gasparinetti, Simone
Encoding quantum information into superpositions of multiple Fock states of a harmonic oscillator can provide protection against errors, but it comes with the cost of requiring more complex quantum gates that need to address multiple Fock states simu
Externí odkaz:
http://arxiv.org/abs/2303.01451
Autor:
Quijandría, Fernando, Twamley, Jason
We re-examine a scheme generalized by [R. Finkelstein et al, Phys. Rev. X 11, 011008 (2021)], whose original purpose was to remove the effects of static Doppler broadening from an ensemble of non-interacting two-level systems (qubits). This scheme in
Externí odkaz:
http://arxiv.org/abs/2302.03827
Autor:
Kudra, Marina, Abad, Tahereh, Kervinen, Mikael, Eriksson, Axel M., Quijandría, Fernando, Delsing, Per, Gasparinetti, Simone
Bosonic quantum error correcting codes are primarily designed to protect against single-photon loss. To correct for this type of error, one can encode the logical qubit in code spaces with a definite photon parity, such as cat codes or binomial codes
Externí odkaz:
http://arxiv.org/abs/2212.12079
Autor:
Hillmann, Timo, Quijandría, Fernando
Publikováno v:
Phys. Rev. A 107, 032423 (2023)
Noise-biased qubits are a promising route toward significantly reducing the hardware overhead associated with quantum error correction. The squeezed cat code, a non-local encoding in phase space based on squeezed coherent states, is an example of a n
Externí odkaz:
http://arxiv.org/abs/2210.13359
Autor:
Lu, Yong, Kudra, Marina, Hillmann, Timo, Yang, Jiaying, Li, Hangxi, Quijandría, Fernando, Delsing, Per
We have designed a tunable nonlinear resonator terminated by a SNAIL (Superconducting Nonlinear Asymmetric Inductive eLement). Such a device possesses a sweet spot in which the external magnetic flux allows to suppress the Kerr interaction. We have e
Externí odkaz:
http://arxiv.org/abs/2210.09718
Publikováno v:
Physical Review Letters 130, 150402 (2023)
We perform quantum process tomography (QPT) for both discrete- and continuous-variable quantum systems by learning a process representation using Kraus operators. The Kraus form ensures that the reconstructed process is completely positive. To make t
Externí odkaz:
http://arxiv.org/abs/2208.00812
Autor:
Borah, Sangkha, Sarma, Bijita, Kewming, Michael, Quijandria, Fernando, Milburn, Gerard J., Twamley, Jason
Publikováno v:
Phys. Rev. Research 4, 033207 (2022)
Canonical discrete quantum error correction (DQEC) schemes use projective von Neumann measurements on stabilizers to discretize the error syndromes into a finite set, and fast unitary gates are applied to recover the corrupted information. Quantum er
Externí odkaz:
http://arxiv.org/abs/2203.13519
Autor:
Jolin, Shan W., Andersson, Gustav, Hernández, J. C. Rivera, Strandberg, Ingrid, Quijandría, Fernando, Aumentado, Joe, Borgani, Riccardo, Tholén, Mats O., Haviland, David B.
Publikováno v:
Phys. Rev. Lett. 130 (2023) 120601
Significant progress has been made with multipartite entanglement of discrete qubits, but continuous variable systems may provide a more scalable path toward entanglement of large ensembles. We demonstrate multipartite entanglement in a microwave fre
Externí odkaz:
http://arxiv.org/abs/2112.12105
Autor:
Kudra, Marina, Kervinen, Mikael, Strandberg, Ingrid, Ahmed, Shahnawaz, Scigliuzzo, Marco, Osman, Amr, Lozano, Daniel Pérez, Tholén, Mats O., Borgani, Riccardo, Haviland, David B., Ferrini, Giulia, Bylander, Jonas, Kockum, Anton Frisk, Quijandría, Fernando, Delsing, Per, Gasparinetti, Simone
Hosting non-classical states of light in three-dimensional microwave cavities has emerged as a promising paradigm for continuous-variable quantum information processing. Here we experimentally demonstrate high-fidelity generation of a range of Wigner
Externí odkaz:
http://arxiv.org/abs/2111.07965
Publikováno v:
PRX Quantum 3, 020334 (2022)
Bosonic quantum error-correcting codes offer a viable direction towards reducing the hardware overhead required for fault-tolerant quantum information processing. A broad class of bosonic codes, namely rotation-symmetric codes, can be characterized b
Externí odkaz:
http://arxiv.org/abs/2108.01009