Diagnosing electronic phases of matter using photonic correlation functions

• URL: http://arxiv.org/abs/2410.24215v2
• Date: Mon, 23 Dec 2024 17:46:31 GMT
• Title: Diagnosing electronic phases of matter using photonic correlation functions
• Authors: Gautam Nambiar, Andrey Grankin, Mohammad Hafezi,
• Abstract summary: We show that it is possible to probe certain spin, charge, and topological orders in an electronic system by measuring the correlation functions of scattered photons. We construct a mapping from the correlators of the scattered photons to those of a correlated insulator.
• Score: 0.0
• License:
• Abstract: In the past couple of decades, there have been significant advances in measuring quantum properties of light, such as quadratures of squeezed light and single-photon counting. Here, we explore whether such tools can be leveraged to probe electronic correlations in the many-body quantum regime. Specifically, we show that it is possible to probe certain spin, charge, and topological orders in an electronic system by measuring the correlation functions of scattered photons. We construct a mapping from the correlators of the scattered photons to those of a correlated insulator, particularly for Mott insulators described by a single-band Fermi-Hubbard model at half-filling. We show that frequency filtering before photodetection plays a crucial role in determining this mapping. We find that if the ground state of the insulator is a gapped spin liquid, a photon-pair correlation function, i.e., $G^{(2)}$, can detect the presence of anyonic excitations with fractional mutual statistics. Moreover, we show that correlations between electromagnetic quadratures can be used to detect expectation values of static spin chirality operators on both the kagome and triangular lattices, thus being useful in detecting chiral spin liquids. More generally, we show that a series of hitherto unmeasured spin-spin and spin-charge correlation functions of the material can be extracted from photonic correlations. This work opens up access to probe correlated materials, beyond the linear response paradigm, by detecting quantum properties of scattered light.

Related papers

• Quantum correlations of the photon fields in a waveguide quantum electrodynamics [0.0]
  We calculate the first order and second order photon correlation functions for the scattering of a single-photon pulse on a two-level atom. Within Markov approximation we find the analytic expression for the quantum operator of positive frequency electric field.
  arXiv  Detail & Related papers  (2024-10-23T09:36:19Z)
• Wave-particle correlations in multiphoton resonances of coherent light-matter interaction [0.0]
  We discuss the conditional measurement of field amplitudes by a nonclassical photon sequence in the Jaynes-Cummings (JC) model under multiphoton operation.
  arXiv  Detail & Related papers  (2024-02-14T16:51:54Z)
• Tunable photon-photon correlations in waveguide QED systems with giant atoms [4.520321677645778]
  We investigate the scattering processes of two photons in a one-dimensional waveguide coupled to two giant atoms. By adjusting the accumulated phase shifts between the coupling points, we are able to effectively manipulate the characteristics of these scattering photons.
  arXiv  Detail & Related papers  (2023-11-07T09:02:28Z)
• Photon emission statistics of a driven microwave cavity [0.0]
  We investigate theoretically the statistics of photons emitted from a microwave cavity driven resonantly by an external field. We employ a Lindblad master equation dressed with counting fields to obtain the generating function of the photon emission statistics. In the long-time limit, we analyze the factorial cumulants of the photon emission statistics and the large-deviation statistics of the emission currents.
  arXiv  Detail & Related papers  (2023-05-03T09:09:00Z)
• Evolution of many-body systems under ancilla quantum measurements [58.720142291102135]
  We study the concept of implementing quantum measurements by coupling a many-body lattice system to an ancillary degree of freedom. We find evidence of a disentangling-entangling measurement-induced transition as was previously observed in more abstract models.
  arXiv  Detail & Related papers  (2023-03-13T13:06:40Z)
• Probing many-body correlations using quantum-cascade correlation spectroscopy [0.0]
  The radiative quantum cascade, i.e. the consecutive emission of photons from a ladder of energy levels, is of fundamental importance in quantum optics. Here, we use exciton polaritons to explore the cascaded emission of photons in the regime where individual transitions of the ladder are not resolved. Remarkably, the measured photon-photon correlations exhibit a strong dependence on the polariton energy, and therefore on the underlying polaritonic interaction strength.
  arXiv  Detail & Related papers  (2022-12-18T09:51:12Z)
• Formation of robust bound states of interacting microwave photons [148.37607455646454]
  One of the hallmarks of interacting systems is the formation of multi-particle bound states. We develop a high fidelity parameterizable fSim gate that implements the periodic quantum circuit of the spin-1/2 XXZ model. By placing microwave photons in adjacent qubit sites, we study the propagation of these excitations and observe their bound nature for up to 5 photons.
  arXiv  Detail & Related papers  (2022-06-10T17:52:29Z)
• Correlated steady states and Raman lasing in continuously pumped and probed atomic ensembles [68.8204255655161]
  We consider an ensemble of Alkali atoms that are continuously optically pumped and probed. Due to the collective scattering of photons at large optical depth, the steady state of atoms does not correspond to an uncorrelated tensor-product state. We find and characterize regimes of Raman lasing, akin to the model of a superradiant laser.
  arXiv  Detail & Related papers  (2022-05-10T06:54:54Z)
• Two-photon resonance fluorescence of two interacting non-identical quantum emitters [77.34726150561087]
  We study a system of two interacting, non-indentical quantum emitters driven by a coherent field. We show that the features imprinted by the two-photon dynamics into the spectrum of resonance fluorescence are particularly sensitive to changes in the distance between emitters. This can be exploited for applications such as superresolution imaging of point-like sources.
  arXiv  Detail & Related papers  (2021-06-04T16:13:01Z)
• Investigating the coherent state detection probability of InGaAs/InP SPAD-based single-photon detectors [55.41644538483948]
  We investigate the probabilities of detecting single- and multi-photon coherent states on InGaAs/InP sine-gated and free-run avalanche diodes. We conclude that multi-photon state detection cannot be regarded as independent events of absorption of individual single-photon states.
  arXiv  Detail & Related papers  (2021-04-16T08:08:48Z)
• Waveguide quantum electrodynamics: collective radiance and photon-photon correlations [151.77380156599398]
  Quantum electrodynamics deals with the interaction of photons propagating in a waveguide with localized quantum emitters. We focus on guided photons and ordered arrays, leading to super- and sub-radiant states, bound photon states and quantum correlations with promising quantum information applications.
  arXiv  Detail & Related papers  (2021-03-11T17:49:52Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.