82 citations · 312 across the 27 of their papers we have counts for
27 papers
Stabilizing temporal quantum-enhanced sensitivity via sub-optimal measurements
Wangsheng Zheng, Yaoling Yang, Abolfazl Bayat
In non-equilibrium probes, quantum-enhanced sensitivity is quantified through super-linear scaling of precision with respect to time, as a central metrology resource. However, this…
Quantum-enhanced sensing in a driven-dissipative system via chiral waveguide
Yan Xi Foo, Saubhik Sarkar, Leong Chuan Kwek +2
Quantum sensors can achieve precision unattainable by classical sensors. However, dissipation coming from interaction with the environment can greatly degrade the performance of qu…
Modular non-Hermitian topology and its application to critical sensing
Saubhik Sarkar, Chiranjib Mukhopadhyay, Abolfazl Bayat
Non-Hermitian topological systems have attracted a lot of research activities in recent times, both theoretically and experimentally, due to their unique physical properties and as…
Nonlinearity-enhanced Quantum Sensing in Discrete Time Crystal Probes
Rozhin Yousefjani, Shaikha Al-Naimi, Saif Al-Kuwari +1
Discrete time crystals are non-equilibrium phases of matter in periodically driven systems, characterized by robust subharmonic oscillations and broken discrete time-translation sy…
Quantum error correction for multiparameter metrology
Mauricio Gutiérrez, Chiranjib Mukhopadhyay, Victor Montenegro +1
For single-parameter sensing, Greenberger-Horne-Zeilinger (GHZ) probes achieve optimal quantum-enhanced precision across the unknown parameter range, solely relying on parameter-in…
Near-Ultimate Quantum-Enhanced Sensitivity in Dissipative Critical Sensing with Partial Access
Dingwei Zhao, Abolfazl Bayat, Victor Montenegro
Quantum sensors are powerful devices that exploit quantum effects to detect minute quantities with extremely high precision. Two obstacles to harnessing the full capacity of quantu…
Non-Equilibrium Criticality-Enhanced Quantum Sensing with Superconducting Qubits
Hao Li, Yaoling Yang, Yun-Hao Shi +24
Exploiting quantum features allows for estimating external parameters with precisions well beyond the capacity of classical sensors, a phenomenon known as quantum-enhanced precisio…
Attaining Quantum Sensing Enhancement from Monitored Dissipative Time Crystals
Eoin O'Connor, Victor Montenegro, Francesco Albarelli +3
This study investigates quantum-enhanced parameter estimation through continuous monitoring in open quantum systems that exhibit a dissipative time crystal phase. We first analytic…
Beating joint quantum estimation limits with stepwise multiparameter metrology
Chiranjib Mukhopadhyay, Abolfazl Bayat, Victor Montenegro +1
Conventional multiparameter quantum sensing relies on joint estimation, but this approach faces two key limitations: theoretical bounds may be unattainable due to measurement incom…
Observation of Criticality-Enhanced Quantum Sensing in Nonunitary Quantum Walks
Lei Xiao, Saubhik Sarkar, Kunkun Wang +2
Quantum physics enables parameter estimation with precisions beyond the capability of classical sensors. Quantum criticality is a key resource for this quantum-enhanced sensing, bu…
Thermal avalanches in isolated many-body localized systems
Muhammad Sajid, Rozhin Yousefjani, Abolfazl Bayat
Many-body localization is a profound phase of matter affecting the entire spectrum which emerges in the presence of disorder in interacting many-body systems. Recently, the stabili…
Discrete time crystal for periodic-field sensing with quantum-enhanced precision
Rozhin Yousefjani, Saif Al-Kuwari, Abolfazl Bayat
Sensing periodic-fields using quantum sensors has been an active field of research. In many of these scenarios, the quantum state of the probe is flipped regularly by the applicati…
Metrological symmetries in singular quantum multi-parameter estimation
George Mihailescu, Saubhik Sarkar, Abolfazl Bayat +2
The theoretical foundation of quantum sensing is rooted in the Cramér-Rao formalism, which establishes quantitative precision bounds for a given quantum probe. In many practical sc…
Overcoming Quantum Metrology Singularity through Sequential Measurements
Yaoling Yang, Victor Montenegro, Abolfazl Bayat
The simultaneous estimation of multiple unknown parameters is the most general scenario in quantum sensing. Quantum multi-parameter estimation theory provides fundamental bounds on…
Current Trends in Global Quantum Metrology
Chiranjib Mukhopadhyay, Victor Montenegro, Abolfazl Bayat
Quantum sensors are now universally acknowledged as one of the most promising near-term quantum technologies. The traditional formulation of quantum sensing introduces a concrete b…
Noisy Stark probes as quantum-enhanced sensors
Saubhik Sarkar, Abolfazl Bayat
Wannier-Stark localization has been proven to be a resource for quantum-enhanced sensitivity for precise estimation of a gradient field. An extremely promising feature of such prob…
Quantum-enhanced sensing of spin-orbit coupling without fine tuning
Bin Yi, Abolfazl Bayat, Saubhik Sarkar
Spin-orbit coupling plays an important role in both fundamental physics and technological applications. Precise estimation of the spin-orbit coupling is necessary for accurate desi…
Non-Hermitian Discrete Time Crystals
Rozhin Yousefjani, Angelo Carollo, Krzysztof Sacha +2
Discrete time crystals (DTC) exhibit a special non-equilibrium phase of matter in periodically driven many-body systems with spontaneous breaking of time translational symmetry. Th…
Saturable global quantum sensing
Chiranjib Mukhopadhyay, Matteo G. A. Paris, Abolfazl Bayat
Conventional formulation of quantum sensing has been mostly developed in the context of local estimation, where the unknown parameter is roughly known. In contrast, global sensing,…
Review: Quantum Metrology and Sensing with Many-Body Systems
Victor Montenegro, Chiranjib Mukhopadhyay, Rozhin Yousefjani +4
The main power of quantum sensors is achieved when the probe is composed of several particles. In this situation, quantum features such as entanglement contribute to enhancing the…
Discrete Time Crystal Phase as a Resource for Quantum Enhanced Sensing
Rozhin Yousefjani, Krzysztof Sacha, Abolfazl Bayat
Discrete time crystals are a special phase of matter in which time translational symmetry is broken through a periodic driving pulse. Here, we first propose and characterize an eff…
Nonlinearity-enhanced quantum sensing in Stark probes
Rozhin Yousefjani, Xingjian He, Angelo Carollo +1
Stark systems in which a linear gradient field is applied across a many-body system have recently been proposed for quantum sensing. Here, we explore sensing capacity of Stark prob…
Sequential measurements thermometry with quantum many-body probes
Yaoling Yang, Victor Montenegro, Abolfazl Bayat
Measuring the temperature of a quantum system is an essential task in almost all aspects of quantum technologies. Theoretically, an optimal strategy for thermometry requires measur…
Modular Many-Body Quantum Sensors
Chiranjib Mukhopadhyay, Abolfazl Bayat
Quantum many-body systems undergoing phase transitions have been proposed as probes enabling beyond-classical enhancement of sensing precision. However, this enhancement is usually…