Storage and on-demand release of microwaves using superconducting resonators with tunable coupling

Pierre, M.; Svensson, Ida-Maria; Sathyamoorthy, Sankar Raman; Johansson, Göran; Delsing, Per

doi:10.1063/1.4882646

Cited by 68 publications

(65 citation statements)

References 21 publications

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“…There is ample time to manipulate a SAW signal "in flight', but it would be very difficult to do something similar with photons, especially if one wants to do measurements and provide feedback signals in real time. Since the typical tuning time for a SQUID is less than 10 ns 48,49 , it would be possible to tune a transmon or a cavity in or out of resonance with the SAW wave many times during a 10 µs traversal.…”

Section: A In-flight Manipulationmentioning

confidence: 99%

Quantum Acoustics with Surface Acoustic Waves

Aref

Delsing

Ekström

et al. 2016

Quantum Science and Technology

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It has recently been demonstrated that surface acoustic waves (SAWs) can interact with superconducting qubits at the quantum level. SAW resonators in the GHz frequency range have also been found to have low loss at temperatures compatible with superconducting quantum circuits. These advances open up new possibilities to use the phonon degree of freedom to carry quantum information. In this paper, we give a description of the basic SAW components needed to develop quantum circuits, where propagating or localized SAW-phonons are used both to study basic physics and to manipulate quantum information. Using phonons instead of photons offers new possibilities which make these quantum acoustic circuits very interesting. We discuss general considerations for SAW experiments at the quantum level and describe experiments both with SAW resonators and with interaction between SAWs and a qubit. We also discuss several potential future developments.

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Section: A In-flight Manipulationmentioning

confidence: 99%

Quantum Acoustics with Surface Acoustic Waves

Aref

Delsing

Ekström

et al. 2016

Quantum Science and Technology

Self Cite

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“…Apart from the high Q-factor, many applications benefit from a variable resonance frequency. Tuning the resonance frequency is a pre-requisite for the dynamic coupling of quantum bits (qubits), 12 controllable storage and release of microwave photons, 13 photon generation via the dynamical Casimir effect, 14 and parametric amplification. 15,16 In all the above examples, the frequency tuning was achieved in CPW resonators by inserting a superconducting quantum interference device (SQUID) into the resonator as a control element.…”

mentioning

confidence: 99%

Tunable superconducting microstrip resonators

Adamyan

Kubatkin

Danilov

2016

Applied Physics Letters

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We report on a simple yet versatile design for a tunable superconducting microstrip resonator. Niobium nitride is employed as the superconducting material and aluminum oxide, produced by atomic layer deposition, as the dielectric layer. We show that the high quality of the dielectric material allows to reach the internal quality factors in the order of Q i $ 10 4 in the single photon regime. Q i rapidly increases with the number of photons in the resonator N and exceeds 10 5 for N $ 10 À 50. A straightforward modification of the basic microstrip design allows to pass a current bias through the strip and to control its kinetic inductance. We achieve a frequency tuning df ¼ 62 MHz around f 0 ¼ 2:4 GHz for a fundamental mode and df ¼ 164 MHz for a third harmonic. This translates into a tuning parameter Q i df =f 0 ¼ 150. The presented design can be incorporated into essentially any superconducting circuitry operating at temperatures below 2.5 K.

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“…Within circuit QED, several theoretical proposals have been put forward for utilizing microwave photons stored in two superconducting CPW resonators as qubits/qudits for quantum gates [69][70][71][72]. (2) Microwave photons have been considered as candidates for quantum memories [61,[73][74][75]. When performing quantum information processing, TEAMS between different multi-qubit memory banks would become a ubiquitous task.…”

Section: Experimental Implementationmentioning

confidence: 99%

One-step transfer or exchange of arbitrary multipartite quantum states with a single-qubit coupler

Yang

Zheng

et al. 2015

Phys. Rev. B

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The transfer or exchange of multipartite quantum states is critical to the realization of large-scale quantum information processing and quantum communication. In this work, we demonstrate that by using a single quantum two-level system -qubit -as a coupler arbitrary multipartite quantum states (either entangled or separable) can be transferred or exchanged simultaneously between two sets of qubits. During the entire process the coupler remains unexcited minimizing the effect of coupler decoherence on the process. This feature allows one to use qubits with rapid frequency tunability and large range of frequency tuning, such as phase qubits, as couplers. Our findings offer the potential to significantly reduce the resources needed to construct and operate largescale quantum information networks consisting of many multi-qubit registers, memory cells, and processing units.

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Storage and on-demand release of microwaves using superconducting resonators with tunable coupling

Cited by 68 publications

References 21 publications

Quantum Acoustics with Surface Acoustic Waves

Quantum Acoustics with Surface Acoustic Waves

Tunable superconducting microstrip resonators

One-step transfer or exchange of arbitrary multipartite quantum states with a single-qubit coupler

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