Josephson Traveling Wave Parametric Amplifiers as non-classical light source for Microwave Quantum Illumination

Fasolo, Luca; Greco, Angelo; Enrico, Emanuele; Illuminati, Fabrizio; Franco, Rosario Lo; Vitali, David; Livreri, Patrizia

doi:10.1016/j.measen.2021.100349

Cited by 13 publications

(7 citation statements)

References 19 publications

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“…It was demonstrated that feeding the amplifier with bimodal Fock input states leads to a quantification for the noise estimators that is within the SQLs, while when exploiting bimodal coherent input states these limits can be exceeded. The results represent a key model to predict the behaviour of rf-SQUID based JTWPA [18], [19] and other Josephson-based metamaterials [23] for quantum computing (via quantum limited amplification of complex signals) [17], [26], [27] and for quantum information (via the generation of non-classical radiation [5]- [8], [28]) in non-ideal cryogenic environment [29].…”

Section: Discussionmentioning

confidence: 95%

“…The amplification is associated with the creation of a second mode at frequency ω ′ = ω p − ω (the so-called idler mode of a three-wave mixing parametric amplification [15]) that is commonly considered as an internal mode of the amplifier that causes the onset of noise at the output port. Here, we extend and give a different perspective of this description considering the case in which an uncorrelated idler mode is already present at the input port (i.e., considering a bimodal input field), analyzing the effect of the interaction between these modes inside the amplifier in terms of typical noise estimators.This operative condition may arise in real measurement setups where the amplifier is exploited, for instance, for the multiplexed readout of broadband signals [16] or for the joint detection and amplification of probing signals in a microwave quantum illumination experiment [8]. The theoretical framework presented in this manuscript is supported with numerical simulations of the noise estimators for a realistic implementation of a quantum-limited amplifier [13], [14] such as the rf-SQUID based Josephson Travelling Wave Parametric Amplifier (JTWPA) [17]- [21], which represents a promising realization of a microwave amplifier with high gain, large bandwidth and quantum-limited added noise [22].…”

Section: Input Portmentioning

confidence: 99%

“…Nowadays, the technological progress in several fields of research, spanning from quantum computation and communication [1]- [3], radio-astronomy [4], radio detection and ranging [5]- [8], up to fundamental physics experiments [9]- [11], led to the demand for ultra-low noise microwave amplifiers a ω,out a ω,in a ω',in…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Bimodal Approach for Noise Figures of Merit Evaluation in Quantum-Limited Josephson Traveling Wave Parametric Amplifiers

Fasolo

Barone

Borghesi

et al. 2022

IEEE Trans. Appl. Supercond.

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The advent of ultra-low noise microwave amplifiers revolutionized several research fields demanding quantum-analyze some of the intrinsic properties of a model architecture (i.e., an rf-SQUID based Josephson Traveling Wave Parametric Amplifier) in terms of amplification and noise generation for key case study input states (Fock and coherents). Furthermore, we present an analysis of the output signals generated by the parametric amplification mechanism when thermal noise fluctuations feed the device.

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Section: Discussionmentioning

confidence: 95%

Section: Input Portmentioning

confidence: 99%

See 1 more Smart Citation

Bimodal Approach for Noise Figures of Merit Evaluation in Quantum-Limited Josephson Traveling Wave Parametric Amplifiers

Fasolo

Barone

Borghesi

et al. 2022

IEEE Trans. Appl. Supercond.

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“…During the amplification process, an idler tone is generated to preserve the energy and momentum of the system. TWPAs have been shown to achieve quantum-limited noise performance, ideal for the readout of highly sensitive cryogenic detection systems including astronomical receivers [13][14][15], dark matter search experiments [16][17][18], and quantum computers [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Balanced travelling-wave parametric amplifiers for practical applications

Longden,

Navarro Montilla,

Tan

2024

Phys. Scr.

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The development of superconducting travelling-wave parametric amplifiers (TWPAs) over the past decade has highlighted their potential as low-noise amplifiers for use in fundamental physics experiments and industrial applications. However, practical challenges, including signal-idler contamination, complex pump injection and cancellation, impedance mismatch, and the reciprocal nature of the device, have made it challenging to deploy TWPAs in real-world applications. In this paper, we introduce an innovative solution to these issues through phase-controlled balanced-TWPA architectures. These architectures involve placing two TWPAs in parallel between a pair of broadband couplers. By carefully controlling the phases of the tones propagating along the TWPAs, we can effectively separate the signal and idler tones, as well as the pump(s), using a straightforward injection and cancellation mechanism. The balanced-TWPA architecture offers versatility and flexibility, as it can be reconfigured either intrinsically or externally to suit different application needs. In this manuscript, we provide a comprehensive discussion of the working principles of the balanced-TWPA, including various configurations designed to meet diverse application requirements. We also present the expected gain-bandwidth products in comparison to traditional TWPAs and conduct tolerance analysis to demonstrate the feasibility and advantages of the balanced-TWPA architecture. By addressing the practical challenges associated with TWPAs, the balanced-TWPA architecture represents a promising advancement in the field, offering a more practical and adaptable solution for a wide range of applications.

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“…In particular, a broadband and low-noise amplification chain is a key element for quantum systems and quantum technologies, e.g. multiplexed read-out of qubits [1], quantum key distribution [2] and microwave quantum illumination [3], and for fundamental physics experiments, e.g. axionic dark matter search [4], dark photons detection [5], and microwave multiplexed read-out of particle and astro-particle detector arrays, such as microwave kinetic inductance detector (MKIDs) [6], transition edge sensors (TESs) [7] and magnetic microcalorimeters (MMCs) [8].…”

Section: Introductionmentioning

confidence: 99%

High kinetic inductance NbTiN films for quantum limited travelling wave parametric amplifiers

Mantegazzini,

Ahrens,

Borghesi

et al. 2023

Phys. Scr.

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A wide-bandwidth and low-noise amplification chain in the microwave regime is crucial for the efficient read-out of quantum systems based on superconducting detectors, such as Microwave Kinetic Inductance Detectors (MKIDs), Transition Edge Sensors (TESs), Magnetic Microcalorimeters (MMCs), and RF cavities, as well as qubits. Kinetic Inductance Travelling Wave Parametric Amplifiers (KI-TWPAs) operated in a three-wave mixing fashion have demonstrated exceptional dynamic range and low-noise performance, approaching the quantum limit. These amplifiers can be fabricated using a single layer of a high kinetic inductance film as weakly dispersive artificial transmission lines, with the ability to control the phase-matched bandwidth through dispersion engineering. In this study, we present the optimisation of the rf sputter-deposition process of NbTiN films using a Nb80%Ti20% target, with the goal of achieving precise control over film characteristics, resulting in high kinetic inductance while maintaining a high transition temperature. The parameter landscape related to the different sputtering conditions, such as pressure, power, and nitrogen flow, has been explored and the film thickness has been used as a fine-tuning parameter to adjust the properties of the final NbTiN films used for the fabrication of KI-TWPAs. As a final result, we have obtained a NbTiN film with a kinetic inductance of 8.5 pH/sq which we have exploited to fabricate KI-TWPA prototype devices, showing promising amplification performance.

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Josephson Traveling Wave Parametric Amplifiers as non-classical light source for Microwave Quantum Illumination

Cited by 13 publications

References 19 publications

Bimodal Approach for Noise Figures of Merit Evaluation in Quantum-Limited Josephson Traveling Wave Parametric Amplifiers

Bimodal Approach for Noise Figures of Merit Evaluation in Quantum-Limited Josephson Traveling Wave Parametric Amplifiers

Balanced travelling-wave parametric amplifiers for practical applications

High kinetic inductance NbTiN films for quantum limited travelling wave parametric amplifiers

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