Tunable Resonators for Quantum Circuits

By A. Palacios-Laloy, François Nguyen, François Mallet, P. Bertet, D. Vion, D. Estève. 2007

160 citations recorded by the source corpus.

We have designed, fabricated and measured high-Q λ/2 coplanar waveguide microwave resonators whose resonance frequency is made tunable with magnetic field by inserting a DC-SQUID array (including 1 or 7 SQUIDs) inside. Their tunability range is 30% of the zero field frequency. Their quality factor reaches up to 3×104. We present a model based on thermal fluctuations that accounts for the dependence of the quality factor with magnetic field.

Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics, Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/f29ee6f7f4f9b4e4c64c43dbe7a478624f65794a

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Artificial Intelligence

1. Franco Nori
2. Sahel Ashhab
3. J. You
4. Z. Xiang
5. Paul D. Nation
6. J. Johansson
7. Göran Wendin
8. Miles P. Blencowe

In Atomic and Molecular Physics, and Optics

1. Franco Nori
2. Sahel Ashhab
3. J. You
4. Z. Xiang
5. J. Johansson
6. Paul D. Nation
7. Göran Wendin
8. Miles P. Blencowe

In Electrical and Electronic Engineering

1. Sahel Ashhab
2. J. Johansson
3. Göran Wendin
4. Franco Nori
5. Miles P. Blencowe
6. Paul D. Nation

Citations in the corpus

• Colloquium: Stimulating uncertainty: Amplifying the quantum vacuum with superconducting circuits (2011, methodology): “This method of implementing tunable boundary conditions has been used, e.g., in experiments on frequencytunable resonators (Palacios-Laloy et al., 2008; Sandberg et al., 2008), and for parametric amplification (Yamamoto et al., 2008) and oscillations (Wilson et al., 2010) (see Sec.”
• Hybrid quantum circuits: Superconducting circuits interacting with other quantum systems (2012, methodology): “Furthermore, the frequency of the resonator can be adjusted by including a SQUID array in the SC wire (Palacios-Laloy et al., 2008).”
• Ultra-low-power superconductor logic (2011, background): “AC power distribution on-chip will benefit from the exceptional microwave properties of superconducting materials that have found applications ranging from singlephoton qubit resonators with Q of 10(4) to THz dark matter detectors [26, 27].”
• Quantum information processing with superconducting circuits: a review (2016, background): “Attaching a SQUID to the end of a coplanar wave­guide resonator (CPW) makes it possible to vary the boundary condition (effective length) and cre­ ate a flux­tunable resonator [261, 262] and to couple qubits [263, 264].”