K
Krishna Kumar Sabapathy
Researcher at Autonomous University of Barcelona
Publications - 32
Citations - 1160
Krishna Kumar Sabapathy is an academic researcher from Autonomous University of Barcelona. The author has contributed to research in topics: Quantum computer & Gaussian. The author has an hindex of 13, co-authored 31 publications receiving 664 citations. Previous affiliations of Krishna Kumar Sabapathy include Université libre de Bruxelles.
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Journal ArticleDOI
Quantum circuits with many photons on a programmable nanophotonic chip.
Juan Miguel Arrazola,Ville Bergholm,Kamil Bradler,Thomas R. Bromley,Matthew J. Collins,Ish Dhand,A. Fumagalli,Thomas Gerrits,A. Goussev,Lukas G. Helt,J. Hundal,Theodor Isacsson,Robert B. Israel,Josh Izaac,Soran Jahangiri,Rafal Janik,Nathan Killoran,Shreya P. Kumar,Jonathan Lavoie,Adriana E. Lita,Dylan H. Mahler,M. Menotti,Blair Morrison,Sae Woo Nam,Leonhard Neuhaus,Haoyu Qi,Nicolás Quesada,A. Repingon,Krishna Kumar Sabapathy,Maria Schuld,Daiqin Su,Jeremy Swinarton,Antal Száva,K. Tan,P. Tan,V. D. Vaidya,Z. Vernon,Zeid Zabaneh,Yanbao Zhang +38 more
TL;DR: In this article, a full-stack hardware-software system for executing many-photon quantum circuit operations using integrated nanophotonics is presented, comprising a programmable nanophotonic chip operating at room temperature, interfaced with a fully automated control system.
Journal ArticleDOI
Operator-sum representation for bosonic Gaussian channels
TL;DR: In this paper, operator-sum representations for single-mode bosonic Gaussian channels are developed, and several of their consequences are explored, including the fact that the two-mode metaplectic operators acting as unitary purification of these channels do not mix the position and momentum variables.
Journal ArticleDOI
Blueprint for a Scalable Photonic Fault-Tolerant Quantum Computer
J. Eli Bourassa,Rafael N. Alexander,Rafael N. Alexander,Michael Vasmer,Michael Vasmer,Ashlesha Patil,Ilan Tzitrin,Takaya Matsuura,Daiqin Su,Ben Q. Baragiola,Saikat Guha,Guillaume Dauphinais,Krishna Kumar Sabapathy,Nicolas C. Menicucci,Ish Dhand +14 more
TL;DR: The proposed architecture enables exploiting state-of-the-art procedures for the non-deterministic generation of bosonic qubits combined with the strengths of continuous-variable quantum computation, namely the implementation of Clifford gates using easy-to-generate squeezed states.
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Progress towards practical qubit computation using approximate Gottesman-Kitaev-Preskill codes
TL;DR: This work investigates the impact of imperfect GKP states on computational circuits independently of the physical architecture and focuses on a state preparation approach in the photonic domain wherein photon-number-resolving measurements on some modes of Gaussian states produce non-Gaussian states in others.
Journal ArticleDOI
Conversion of Gaussian states to non-Gaussian states using photon-number-resolving detectors
TL;DR: The proposed framework provides a method to search for the Gaussian circuit and measurement pattern that produces a target non-Gaussian state with optimal fidelity and success probability and has potential far-reaching implications for the generation of bosonic error-correction codes that require non- Gaussian states, resource states for the implementation of non-gaussian gates needed for universal quantum computation, among other applications requiring non-GAussianity.