42 citations · 149 across the 21 of their papers we have counts for
18 papers · 1 filter
Entangling Atomic Quantum Memories Using High-Order Modulated Coherent States
Chaohan Cui, Prajit Dhara, Saikat Guha
High-order coherent-state modulation and collective midpoint measurements enable multi-ebit entanglement distribution between cavity-coupled atomic memories. An SRM-inspired 16-QAM…
Non-Markovian delay-assisted sensing with waveguide-coupled quantum emitters
Prajit Dhara, Isack Padilla, Saikat Guha +2
We show that in a minimal setup of two waveguide-coupled quantum emitters, separated by long distances and subject to an external field, time-delayed feedback can be a resource for…
Scheduling in Quantum Satellite Networks: Fairness and Performance Optimization
Ashutosh Jayant Dikshit, Naga Lakshmi Anipeddi, Prajit Dhara +5
Quantum satellite networks offer a promising solution for achieving long-distance quantum communication by enabling entanglement distribution across global scales. This work formul…
Full-stack Physics-level model of cascaded entanglement links
J. Gabriel Richardson, Prajit Dhara, Abhishek Bhatt +2
While the last few decades have seen a proliferation of experimental demonstrations of entanglement sources, practicality of deployment has been a secondary concern. Recently, the…
Coherent State Assisted Entanglement Generation Between Quantum Memories
Chaohan Cui, Prajit Dhara, Saikat Guha
Generating entanglement deterministically at a capacity-approaching rate is critical for next-generation quantum networks. We revisit previous protocols and present a readily-reali…
Blockwise Post-processing in Satellite-based Quantum Key Distribution
Minu J. Bae, Nitish K. Panigrahy, Prajit Dhara +5
Free-space satellite communication has significantly lower photon loss than terrestrial communication via optical fibers. Satellite-based quantum key distribution (QKD) leverages t…
Interfacing Gottesman-Kitaev-Preskill Qubits to Quantum Memories
Prajit Dhara, Liang Jiang, Saikat Guha
Gottesman-Kitaev-Preskill (GKP) states have been demonstrated to pose significant advantages when utilized for fault-tolerant all optical continuous-variable quantum computing as w…
Entangling Quantum Memories at Channel Capacity
Prajit Dhara, Liang Jiang, Saikat Guha
Entangling quantum memories, mediated by optical-frequency or microwave channels, at high rates and fidelities is key for linking qubits across short and long ranges. All well-know…
Blockwise Key Distillation in Satellite-based Quantum Key Distribution
Minu J. Bae, Nitish K. Panigrahy, Prajit Dhara +4
Free-space satellite communication has significantly lower photon loss than terrestrial communication via optical fibers. Satellite-based quantum key distribution (QKD) leverages t…
Phonon-Induced Decoherence in Color-Center Qubits
Prajit Dhara, Saikat Guha
Electron spin states of solid-state defects such as Nitrogen- and Silicon-vacancy {\em color centers} in diamond are a leading quantum-memory candidate for quantum communications a…
Entangling Quantum Memories via Heralded Photonic Bell Measurement
Prajit Dhara, Dirk Englund, Saikat Guha
A common way to entangle quantum memories is via photonic entanglement swaps. Each of two memories, connected by an optical channel, emits a photonic qubit entangled with itself, a…
Exploring the possibility of a complex-valued non-Gaussianity measure for quantum states of light
Andrew J. Pizzimenti, Prajit Dhara, Zacharie Van Herstraeten +2
We consider a quantity that is the differential relative entropy between a generic Wigner function and a Gaussian one. We prove that said quantity is minimized with respect to its…
Zero-Added-Loss Entangled Photon Multiplexing for Ground- and Space-Based Quantum Networks
Kevin C. Chen, Prajit Dhara, Mikkel Heuck +4
We propose a scheme for optical entanglement distribution in quantum networks based on a quasi-deterministic entangled photon pair source. By combining heralded photonic Bell pair…
Optimal Entanglement Distribution using Satellite Based Quantum Networks
Nitish K. Panigrahy, Prajit Dhara, Don Towsley +2
Recent technological advancements in satellite based quantum communication has made it a promising technology for realizing global scale quantum networks. Due to better loss distan…
Heralded-Multiplexed High-Efficiency Cascaded Source of Dual-Rail Polarization-Entangled Photon Pairs using Spontaneous Parametric Down Conversion
Prajit Dhara, Spencer J. Johnson, Christos N. Gagatsos +2
Deterministic sources of high-fidelity entangled qubit pairs encoded in the dual-rail photonic basis, i.e., presence of a single photon in one of two orthogonal modes, are a key en…
Multiplexed quantum repeaters based on dual-species trapped-ion systems
Prajit Dhara, Norbert M. Linke, Edo Waks +2
Trapped ions form an advanced technology platform for quantum information processing with long qubit coherence times, high-fidelity quantum logic gates, optically active qubits, an…
Coherent manipulation of graph states composed of finite-energy Gottesman-Kitaev-Preskill-encoded qubits
Kaushik P. Seshadreesan, Prajit Dhara, Ashlesha Patil +2
Graph states are a central resource in measurement-based quantum information processing. In the photonic qubit architecture based on Gottesman-Kitaev-Preskill (GKP) encoding, the g…
Subexponential rate versus distance with time-multiplexed quantum repeaters
Prajit Dhara, Ashlesha Patil, Hari Krovi +1
Quantum communications capacity using direct transmission over length- optical fiber scales as , where is the fiber's loss coefficient. The rate achieved usi…