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Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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16 papers · 2 filters
Exact eigenvalue order statistics for the reduced density matrix of a bipartite system
B. Sharmila, V. Balakrishnan, S. Lakshmibala
We consider the reduced density matrix of a bipartite system of dimensionality in a Gaussian ensemble of random, complex pure states of the composite system…
Dynamics of a multipartite hybrid quantum system with beamsplitter, dipole-dipole, and Ising interactions
Pradip Laha
The possibility of exploiting heterogeneous quantum systems to high precision, for storing, processing, and transmitting information makes them ideal candidates for multi-tasking p…
Tomographic entanglement indicators in frequency combs and Talbot carpets
B. Sharmila, S. Lakshmibala, V. Balakrishnan
Recent theoretical investigations on tomographic entanglement indicators have showcased the advantages of the tomographic approach in the context of continuous-variable (CV), spin…
Atomic and entanglement dynamics in the mixed squeezed coherent state version of the Jaynes-Cummings interaction
Koushik Mandal, Pooja Jethwani, M. Venkata Satyanarayana
Coherent signal containing squeezed noise in a mixed state of radiation field is considered here as a non-Gaussian mixture of a coherent state density operator and a squeezed state…
Quantum computation with charge-and-color permuting twists in qudit color codes
Manoj G. Gowda, Pradeep Kiran Sarvepalli
Twists are defects in the lattice which can be utilized to perform computations on encoded data. Twists have been studied in various classes of topological codes like qubit and qud…
Bounding Quantum Advantages in Postselected Metrology
Sourav Das, Subhrajit Modak, Manabendra Nath Bera
Weak value amplification and other postselection-based metrological protocols can enhance precision while estimating small parameters, outperforming postselection-free protocols. I…
Achieving fault tolerance against amplitude-damping noise
Akshaya Jayashankar, My Duy Hoang Long, Hui Khoon Ng +1
With the intense interest in small, noisy quantum computing devices comes the push for larger, more accurate -- and hence more useful -- quantum computers. While fully fault-tolera…
Accessible and inaccessible quantum coherence in relativistic quantum systems
Saveetha Harikrishnan, Segar Jambulingam, Peter P. Rohde +1
The quantum coherence of a multipartite system is investigated when some of the parties are moving with uniform acceleration and the analysis is carried out using the single mode a…
Extraction of Product and Higher Moment Weak Values: Applications in Quantum State Reconstruction and Entanglement Detection
Sahil, Sohail, Subhrajit Modak +2
Weak measurements introduced by Aharonov, Albert and Vaidman (AAV) can provide informations about the system with minimal back action. Weak values of product observables (commuting…
Gated InGaAs Detector Characterization with Sub-Picosecond Weak Coherent Pulses
Gautam Kumar Shaw, Shyam Sridharan, Anil Prabhakar
We propose and demonstrate a method to characterize a gated InGaAs single-photon detector (SPD). Ultrashort weak coherent pulses, from a mode-locked sub-picosecond pulsed laser, we…
Tomographic entanglement indicators from NMR experiments
B. Sharmila, V. R. Krithika, Soham Pal +3
In recent years, the performance of different entanglement indicators obtained directly from tomograms has been assessed in continuous-variable and hybrid quantum systems. In this…
Thirty-six entangled officers of Euler: Quantum solution to a classically impossible problem
Suhail Ahmad Rather, Adam Burchardt, Wojciech Bruzda +3
The negative solution to the famous problem of officers of Euler implies that there are no two orthogonal Latin squares of order six. We show that the problem has a solution,…
Color codes with twists: construction and universal gate set implementation
Manoj G. Gowda, Pradeep Kiran Sarvepalli
Twists are defects in the lattice that can be used to perform encoded computations. Three basic types of twists can be introduced in color codes, namely, twists that permute color,…
A tale of two kinds of exceptional point in a hydrogen molecule
Himadri Barman, Suriyaa Valliapan
We study the parity and time-reversal () symmetric quantum physics in a non-Hermitian non-relativistic hydrogen molecule with local (Hubbard type) Coulomb interaction…
Quantum tomography with random diagonal unitary maps and statistical bounds on information generation using random matrix theory
Sreeram PG, Vaibhav Madhok
We study quantum tomography from a continuous measurement record obtained by measuring expectation values of a set of Hermitian operators obtained from unitary evolution of an init…
From dual-unitary to quantum Bernoulli circuits: Role of the entangling power in constructing a quantum ergodic hierarchy
S. Aravinda, Suhail Ahmad Rather, Arul Lakshminarayan
Deterministic classical dynamical systems have an ergodic hierarchy, from ergodic through mixing, to Bernoulli systems that are "as random as a coin-toss". Dual-unitary circuits ha…