Danny Weiss
@dkweiss.bsky.social
Postdoc at the Yale Quantum Institute
The former: theory from 2004 (Blais et al) said that if you increase the number of photons in the readout resonator, you can readout faster and win. Sank (2016) showed this isn’t the case because of weird resonances that occur, causing transitions to high lying states (hence not QND)
January 1, 2025 at 11:19 AM
The former: theory from 2004 (Blais et al) said that if you increase the number of photons in the readout resonator, you can readout faster and win. Sank (2016) showed this isn’t the case because of weird resonances that occur, causing transitions to high lying states (hence not QND)
Hi @hyperboieva.bsky.social ! Dispersive readout in circuit QED is a good example, see for instance this recent work arxiv.org/abs/2407.10934. These types of measurements aren’t perfectly QND (hot topic recently) see here journals.aps.org/prx/abstract...
Benchmarking the readout of a superconducting qubit for repeated measurements
Readout of superconducting qubits faces a trade-off between measurement speed and unwanted back-action on the qubit caused by the readout drive, such as $T_1$ degradation and leakage out of the comput...
arxiv.org
December 30, 2024 at 9:10 PM
Hi @hyperboieva.bsky.social ! Dispersive readout in circuit QED is a good example, see for instance this recent work arxiv.org/abs/2407.10934. These types of measurements aren’t perfectly QND (hot topic recently) see here journals.aps.org/prx/abstract...