90 citations · 276 across the 18 of their papers we have counts for
19 papers
BARC codes: general polynomial framework for coherent-state superposition codes
Praneel Gore, Davit Aghamalyan, Varun Narasimhachar +1
We introduce an algebraic framework for constructing a new class of quantum error-correcting codes, bosonic algebraically-restricted constellation (BARC) codes. The code states are…
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…
Transient entanglement generation in driven chiral networks beyond the secular approximation
Yan Xi Foo, Kian Hwee Lim, Jia-Bin You +2
We study transient entanglement generation between two quantum nodes coupled through a chiral one-dimensional channel. In an emitter-only Born-Markov description, we show that cont…
Approximate virtual quantum broadcasting
Matthew Simon Tan, Davit Aghamalyan, Varun Narasimhachar
The no-broadcasting theorem, a fundamental limitation on the communication of quantum information, holds that a physical process cannot broadcast copies of an unknown quantum state…
The Dirac--Bergmann approach to optimal control theory
Davit Aghamalyan, Aleek Maity, Varun Narasimhachar +1
We present a novel framework for optimal control in both classical and quantum systems. Our approach leverages the Dirac--Bergmann algorithm: a systematic method for formulating an…
Data re-uploading in Quantum Machine Learning for time series: application to traffic forecasting
Nikolaos Schetakis, Paolo Bonfini, Negin Alisoltani +6
Accurate traffic forecasting plays a crucial role in modern Intelligent Transportation Systems (ITS), as it enables real-time traffic flow management, reduces congestion, and impro…
Generation and optimization of entanglement between atoms chirally coupled to spin cavities
Jia-Bin You, Jian Feng Kong, Davit Aghamalyan +5
We explore the generation and optimization of entanglement between atoms chirally coupled to finite 1D spin chains, functioning as {\it spin cavities}. By diagonalizing the spin ca…
Exponentially faster preparation of quantum dimers via driven-dissipative stabilization
Kian Hwee Lim, Wai-Keong Mok, Jia-Bin You +2
We propose a novel rapid, high-fidelity, and noise-resistant scheme to generate many-body entanglement between multiple qubits stabilized by dissipation into a 1D bath. Using a car…
Quantum Machine Learning for Credit Scoring
Nikolaos Schetakis, Davit Aghamalyan, Michael Boguslavsky +3
In this paper we explore the use of quantum machine learning (QML) applied to credit scoring for small and medium-sized enterprises (SME). A quantum/classical hybrid approach has b…
Binary classifiers for noisy datasets: a comparative study of existing quantum machine learning frameworks and some new approaches
N. Schetakis, D. Aghamalyan, M. Boguslavsky +1
One of the most promising areas of research to obtain practical advantage is Quantum Machine Learning which was born as a result of cross-fertilisation of ideas between Quantum Com…
Microtoroidal resonators enhance long-distance dynamical entanglement generation in chiral quantum networks
Wai-Keong Mok, Davit Aghamalyan, Jia-Bin You +1
Chiral quantum networks provide a promising route for realising quantum information processing and quantum communication. Here, we describe how two distant quantum nodes of chiral…
Long-distance dissipation-assisted transport of entangled states via a chiral waveguide
Wai-Keong Mok, Davit Aghamalyan, Jia-Bin You +4
Quantum networks provide a prominent platform for realizing quantum information processing and quantum communication, with entanglement being a key resource in such applications. H…
Quantum transistor realized with a single -level atom coupled to the microtoroidal cavity
Davit Aghamalyan, Jia-Bin You, Hong-Son Chu +3
We propose a realization of the quantum transistor for coherent light fields for the fibre-coupled microdisk cavities. We demonstrate by combining numerical and analytical methods…
An Atomtronic Flux Qubit: A ring lattice of Bose-Einstein condensates interrupted by three weak links
D. Aghamalyan, N. T. Nguyen, F. Auksztol +6
We study a physical system consisting of a Bose-Einstein condensate confined to a ring shaped lattice potential interrupted by three weak links. The system is assumed to be driven…
Coherent superposition of current flows in an Atomtronic Quantum Interference Device
Davit Aghamalyan, Marco Cominotti, Matteo Rizzi +5
We consider a correlated Bose gas tightly confined into a ring shaped lattice, in the presence of an artificial gauge potential inducing a persistent current through it. A weak lin…
Optimal scaling of persistent currents for interacting bosons on a ring
Marco Cominotti, Matteo Rizzi, Davide Rossini +5
We consider the persistent currents induced by an artificial gauge field applied to interacting ultra-cold bosonic atoms in a tight ring trap. Using both analytical and numerical m…
Effective dynamics of cold atoms flowing in two ring shaped optical potentials with tunable tunneling
Davit Aghamalyan, Luigi Amico, L. C Kwek
We study the current dynamics of coupled atomic condensates flowing in two ring-shaped optical potentials. We provide a specific setup where the ring-ring coupling can be tuned in…
Superfluid qubit systems with ring shaped optical lattices
Luigi Amico, Davit Aghamalyan, H. Crepaz +3
We study an experimentally feasible qubit system employing neutral atomic currents. Our system is based on bosonic cold atoms trapped in ring-shaped optical lattice potentials. The…
Quantum Repeaters based on Deterministic Storage of a Single Photon in distant Atomic Ensembles
D. Aghamalyan, Yu. Malakyan
Quantum repeaters hold the promise to prevent the photon losses in communication channels. Most recently, the serious efforts have been applied to achieve scalable distribution of…