---
res:
  bibo_abstract:
  - "This thesis explores advancements in quantum remote sensing and non-equilibrium
    phase\r\ntransitions in the microwave regime, with a focus on dissipative phase
    transitions and quantumenhanced sensing.\r\nIn the first project, I experimentally
    studied photon blockade breakdown as a dissipative phase\r\ntransition in a zero-dimensional
    cavity-qubit system. By defining an appropriate thermodynamic\r\nlimit, we demonstrated
    that the observed bistability is a genuine signature of a first-order\r\nphase
    transition in this system. This work provides insight into non-equilibrium quantum\r\ndynamics
    and phase transitions in driven-dissipative open quantum systems.\r\nThe second
    project focuses on the experimental realization of a phase-conjugate receiver
    for\r\nquantum illumination (QI), a quantum sensing protocol that enhances target
    detection in noisy\r\nenvironments using entangled light. While an ideal spontaneous
    parametric down-conversion\r\n(SPDC) source and receiver could, in theory, provide
    up to a 6 dB advantage over classical\r\nillumination, no such ideal receiver
    exists. Instead, we explore an experimental realization of a\r\nphase-conjugate
    receiver for QI in the microwave regime at millikelvin temperatures using a\r\nJosephson
    parametric converter (JPC) as a source of continuous-variable Gaussian entangled\r\nsignal-idler
    pairs, where a maximum 3 dB advantage is theoretically achievable. We investigate\r\nkey
    experimental limitations that constrain practical QI performance, contributing
    to the\r\ndevelopment of quantum-enhanced sensing.\r\nAdditionally, this thesis
    presents efficient digital signal processing (DSP) techniques implemented in C++
    and Python in collaboration with Przemysław Zieliński and Luka Drmić. These\r\nmethods,
    optimized using the Intel Integrated Performance Primitives (IPP) library, have
    been\r\nessential in data acquisition, noise filtering, and correlation analysis
    across multiple research\r\nprojects. Although not real-time, these DSP techniques
    significantly enhance the accuracy of\r\nquantum measurements.\r\nOverall, this
    thesis advances quantum-enhanced sensing by establishing the thermodynamic\r\nlimit
    in a single transmon-cavity system and experimentally exploring a phase-conjugate
    receiver\r\nfor QI. These findings contribute to quantum metrology, particularly
    for weak signal detection\r\nand remote sensing in noisy environments.\r\n@eng"
  bibo_authorlist:
  - foaf_Person:
      foaf_givenName: Riya
      foaf_name: Sett, Riya
      foaf_surname: Sett
      foaf_workInfoHomepage: http://www.librecat.org/personId=2E6D040E-F248-11E8-B48F-1D18A9856A87
    orcid: 0000-0001-7641-8348
  bibo_doi: 10.15479/AT-ISTA-19533
  dct_date: 2025^xs_gYear
  dct_isPartOf:
  - http://id.crossref.org/issn/2663-337X
  dct_language: eng
  dct_publisher: Institute of Science and Technology Austria@
  dct_subject:
  - phase transition
  - open quantum system
  - phase diagram
  - cavity quantum electrodynamics
  - superconducting qubits
  - semiclassical physics
  - quantum optics
  - josephson junction
  - parametric converter
  - phase conjugation
  - quantum radar
  - quantum entanglement
  - correlation
  - quantum sensing
  dct_title: ' Quantum remote sensing and non-equilibrium phase transitions in the
    microwave regime@'
...