Amplification and squeezing of quantum noise with a tunable Josephson metamaterial

By M. Castellanos-Beltran, K. Irwin, G. Hilton, L. Vale, Konrad W. Lehnert. 2008

595 citations recorded by the source corpus.

An array of 488 Josephson junctions that amplifies and squeezes noise beyond conventional quantum limits should prove useful in the study and development of superconducting qubits and other quantum devices.

Subfields: Artificial Intelligence, Atomic and Molecular Physics, and Optics

View Paper: https://www.semanticscholar.org/paper/3aecac497fbc912c504585d227c2120b235db5c5

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

In Atomic and Molecular Physics, and Optics

Citations in the corpus

Experimental violation of a Bell’s inequality in time with weak measurement (2010, background): “if the continuous monitoring could be performed with a quantum-limited amplifier [30, 31], it would become indeed possible to stabilize the phase of the Rabi oscillations by feeding back the demodulated signal onto the amplitude or frequency of the source that drives the TLS.”
Quantum information processing and quantum optics with circuit quantum electrodynamics (2020, background): “…working at large detunings is that the resonator acts as a band-pass filter protecting the qubit from noise at its transition frequency, which is the cause of unwanted qubit transitions (for example, vacuum noise, which causes spontaneous emission of microwave photons when the qubit is in its…”
Introduction to quantum noise, measurement, and amplification (2008, methodology): “Such amplifiers are now being developed using the tools of circuit quantum electrodynamics, employing Josephson junctions or SQUIDs coupled to microwave transmission line cavities (Bergeal et al., 2008; Castellanos-Beltran et al., 2008).”
Circuit quantum electrodynamics (2020, methodology): “Kerr nonlinear coplanar waveguide resonators have been used, for example, as near quantumlimited linear amplifiers (Castellanos-Beltran et al., 2008), bifurcation amplifiers (Metcalfe et al., 2007), and to study phenomena such as quantum heating (Ong et al., 2013).”
Progress in superconducting metamaterials (2014, background): “The realizations include (from top-to-bottom) single and double [109] split rings, two types of ASRs [21, 30], the split-cross structure [17], the woodcut flux-quantization split-ring resonator [74], the spiral [36], and rf- [83, 88], dc- [101], and multi-junction [141] SQUIDs and qubits.”
Analog information processing at the quantum limit with a Josephson ring modulator (2008, background): “However, recent progress in quantum information processing using microwave interrogation of solid states qubits[13, 14, 15, 16] gave rise to a growing need for low-noise amplifiers which are sensitive enough to measure the extremely weak signals involved in these new devices and renewed the interest”