Quantum wave mixing and visualisation of coherent and superposed photonic states in a waveguide

Dmitriev, A. Yu.; Shaikhaidarov, R.; Antonov, V. N.; Hönigl-Decrinis, T.; Astafiev, O.

doi:10.1038/s41467-017-01471-x

Cited by 30 publications

(21 citation statements)

References 31 publications

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“…Here, signals over a range of more than one GHz were measured. When including higher levels 19 , this sensor can simultaneously determine the amplitude and frequency of an unknown signal, promoting it as a useful tool for experiments in quantum optics [20][21][22] and quantum microwave photonics [23][24][25] , where insitu frequency detection can be beneficial. However, the spectroscopic measurement techniques employed in these proof of principle experiments offer limited precision for reasonable data acquisition times.…”

Section: Introductionmentioning

confidence: 99%

Amplitude and frequency sensing of microwave fields with a superconducting transmon qudit

et al. 2020

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Experiments with superconducting circuits require careful calibration of the applied pulses and fields over a large frequency range. This remains an ongoing challenge as commercial semiconductor electronics are not able to probe signals arriving at the chip due to its cryogenic environment. Here, we demonstrate how the on-chip amplitude and frequency of a microwave signal can be inferred from the ac Stark shifts of higher transmon levels. In our time-resolved measurements we employ Ramsey fringes, allowing us to detect the amplitude of the systems transfer function over a range of several hundreds of MHz with an energy sensitivity on the order of 10 −4. Combined with similar measurements for the phase of the transfer function, our sensing method can facilitate pulse correction for high fidelity quantum gates in superconducting circuits. Additionally, the potential to characterize arbitrary microwave fields promotes applications in related areas of research, such as quantum optics or hybrid microwave systems including photonic, mechanical or magnonic subsystems.

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Section: Introductionmentioning

confidence: 99%

Amplitude and frequency sensing of microwave fields with a superconducting transmon qudit

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Here, signals over a range of more than one GHz were measured. When including higher levels [18], this sensor can simultaneously determine the amplitude and frequency of an unknown signal, promoting it as a useful tool for experiments in quantum optics [19][20][21] and quantum microwave photonics [22][23][24], where in-situ frequency detection can be beneficial. However, the spectroscopic measurement techniques employed in these proof of principle experiments offer limited precision for reasonable data acquisition times.…”

Section: Introductionmentioning

confidence: 99%

Amplitude and frequency sensing of microwave fields with a superconducting transmon qudit

Kristen,

Schneider,

Stehli

et al. 2019

Preprint

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Experiments with superconducting circuits require careful calibration of the applied pulses and fields over a large frequency range. This remains an ongoing challenge as commercial semiconductor electronics are not able to probe signals arriving at the chip due to its cryogenic environment. Here, we demonstrate how the on-chip amplitude and frequency of a microwave signal can be inferred from the ac Stark shifts of higher transmon levels. In our time-resolved measurements we employ Ramsey fringes, allowing us to detect the amplitude of the systems transfer function over a range of several hundreds of MHz with an energy sensitivity on the order of 10 −4 . Combined with similar measurements for the phase of the transfer function, our sensing method can facilitate pulse correction for high fidelity quantum gates in superconducting circuits. Additionally, the potential to characterize arbitrary microwave fields promotes applications in related areas of research, such as quantum optics or hybrid microwave systems including photonic, mechanical or magnonic subsystems.

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“…Superconducting quantum circuits [1,2], tapered nanofibers [3], and photonic crystals [4] are some examples of such systems. Strong light-matter interactions have been engineered in these waveguide QED systems to demonstrate many interesting physical phenomena such as resonance fluorescence [5][6][7], nonreciprocal transmission [8][9][10][11][12][13], electromagnetically induced transparency [14][15][16][17], cross-Kerr nonlinearity [18,19], photon-mediated interactions between distant emitters [20,21], quantum wave mixing [22,23], and to create basic all-optical quantum devices such as single-photon router or switch [14,24,25], single-photon transistor [26,27], amplifier [28][29][30][31][32]. Many of the above phenomena, e.g., electromagnetically induced transparency, cross-Kerr nonlinearity, nonreciprocity, and the devices, e.g., router, transistor, amplifier, are studied with a three-level emitter (3LE) and two light beams.…”

Section: Introductionmentioning

confidence: 99%

Amplification and cross-Kerr nonlinearity in waveguide quantum electrodynamics

Vinu,

Roy

2019

Preprint

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We explore amplification and cross-Kerr nonlinearity by a three-level emitter (3LE) embedded in a waveguide and driven by two light beams. The coherent amplification and cross-Kerr nonlinearity were demonstrated in recent experiments, respectively, with a V and a ladder-type 3LE coupled to an open superconducting transmission line carrying two microwave fields. Here, we consider Λ, V , and ladder-type 3LE, and compare the efficiency of coherent and incoherent amplification as well as the magnitude of the cross-Kerr phase shift in all three emitters. We apply the Heisenberg-Langevin equations approach to investigate the scattering of a probe and a drive beams both initially in a coherent state. We particularly calculate the regime of the probe and drive powers when the 3LE acts most efficiently as a coherent amplifier, and derive the second-order coherence of amplified probe photons. Finally, we apply the Kramers-Kronig relations to correlate the amplitude and phase response of the probe beam, which are used in finding the coherent amplification and the cross-Kerr phase shift in these systems.

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Quantum wave mixing and visualisation of coherent and superposed photonic states in a waveguide

Cited by 30 publications

References 31 publications

Amplitude and frequency sensing of microwave fields with a superconducting transmon qudit

Amplitude and frequency sensing of microwave fields with a superconducting transmon qudit

Amplitude and frequency sensing of microwave fields with a superconducting transmon qudit

Amplification and cross-Kerr nonlinearity in waveguide quantum electrodynamics

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