806 citations · 3k across the 21 of their papers we have counts for
21 papers
Effect of non-unital noise on random circuit sampling
Bill Fefferman, Soumik Ghosh, Michael Gullans +2
In this work, drawing inspiration from the type of noise present in real hardware, we study the output distribution of random quantum circuits under practical non-unital noise sour…
Locality and Error Mitigation of Quantum Circuits
Minh C. Tran, Kunal Sharma, Kristan Temme
In this work, we study and improve two leading error mitigation techniques, namely Probabilistic Error Cancellation (PEC) and Zero-Noise Extrapolation (ZNE), for estimating the exp…
Continuous-variable quantum state designs: theory and applications
Joseph T. Iosue, Kunal Sharma, Michael J. Gullans +1
We generalize the notion of quantum state designs to infinite-dimensional spaces. We first prove that, under the definition of continuous-variable (CV) state -designs from Comm.…
Quantum Non-Demolition Photon Counting in a 2d Rydberg Atom Array
Christopher Fechisin, Kunal Sharma, Przemyslaw Bienias +4
Rydberg arrays merge the collective behavior of ordered atomic arrays with the controllability and optical nonlinearities of Rydberg systems, resulting in a powerful platform for r…
Analytic theory for the dynamics of wide quantum neural networks
Junyu Liu, Khadijeh Najafi, Kunal Sharma +3
Parameterized quantum circuits can be used as quantum neural networks and have the potential to outperform their classical counterparts when trained for addressing learning problem…
Generalization in quantum machine learning from few training data
Matthias C. Caro, Hsin-Yuan Huang, M. Cerezo +4
Modern quantum machine learning (QML) methods involve variationally optimizing a parameterized quantum circuit on a training data set, and subsequently making predictions on a test…
Estimating distinguishability measures on quantum computers
Soorya Rethinasamy, Rochisha Agarwal, Kunal Sharma +1
The performance of a quantum information processing protocol is ultimately judged by distinguishability measures that quantify how distinguishable the actual result of the protocol…
Diagnosing Barren Plateaus with Tools from Quantum Optimal Control
Martin Larocca, Piotr Czarnik, Kunal Sharma +3
Variational Quantum Algorithms (VQAs) have received considerable attention due to their potential for achieving near-term quantum advantage. However, more work is needed to underst…
Connecting ansatz expressibility to gradient magnitudes and barren plateaus
Zoë Holmes, Kunal Sharma, M. Cerezo +1
Parameterized quantum circuits serve as ansätze for solving variational problems and provide a flexible paradigm for programming near-term quantum computers. Ideally, such ansätze…
Optimal tests for continuous-variable quantum teleportation and photodetectors
Kunal Sharma, Barry C. Sanders, Mark M. Wilde
Quantum teleportation is a primitive in several important applications, including quantum communication, quantum computation, error correction, and quantum networks. In this work,…
Noise-Induced Barren Plateaus in Variational Quantum Algorithms
Samson Wang, Enrico Fontana, M. Cerezo +4
Variational Quantum Algorithms (VQAs) may be a path to quantum advantage on Noisy Intermediate-Scale Quantum (NISQ) computers. A natural question is whether noise on NISQ devices p…
Reformulation of the No-Free-Lunch Theorem for Entangled Data Sets
Kunal Sharma, M. Cerezo, Zoë Holmes +3
The no-free-lunch (NFL) theorem is a celebrated result in learning theory that limits one's ability to learn a function with a training data set. With the recent rise of quantum ma…
Trainability of Dissipative Perceptron-Based Quantum Neural Networks
Kunal Sharma, M. Cerezo, Lukasz Cincio +1
Several architectures have been proposed for quantum neural networks (QNNs), with the goal of efficiently performing machine learning tasks on quantum data. Rigorous scaling result…
Variational Quantum State Eigensolver
M. Cerezo, Kunal Sharma, Andrew Arrasmith +1
Extracting eigenvalues and eigenvectors of exponentially large matrices will be an important application of near-term quantum computers. The Variational Quantum Eigensolver (VQE) t…
Noise Resilience of Variational Quantum Compiling
Kunal Sharma, Sumeet Khatri, M. Cerezo +1
Variational hybrid quantum-classical algorithms (VHQCAs) are near-term algorithms that leverage classical optimization to minimize a cost function, which is efficiently evaluated o…
Information-theoretic aspects of the generalized amplitude damping channel
Sumeet Khatri, Kunal Sharma, Mark M. Wilde
The generalized amplitude damping channel (GADC) is one of the sources of noise in superconducting-circuit-based quantum computing. It can be viewed as the qubit analogue of the bo…
Characterizing the performance of continuous-variable Gaussian quantum gates
Kunal Sharma, Mark M. Wilde
The required set of operations for universal continuous-variable quantum computation can be divided into two primary categories: Gaussian and non-Gaussian operations. Furthermore,…
Entanglement-assisted private communication over quantum broadcast channels
Haoyu Qi, Kunal Sharma, Mark M. Wilde
We consider entanglement-assisted (EA) private communication over a quantum broadcast channel, in which there is a single sender and multiple receivers. We divide the receivers int…
Bounding the energy-constrained quantum and private capacities of phase-insensitive bosonic Gaussian channels
Kunal Sharma, Mark M. Wilde, Sushovit Adhikari +1
We establish several upper bounds on the energy-constrained quantum and private capacities of all single-mode phase-insensitive bosonic Gaussian channels. The first upper bound, wh…
Conditional quantum one-time pad
Kunal Sharma, Eyuri Wakakuwa, Mark M. Wilde
Suppose that Alice and Bob are located in distant laboratories, which are connected by an ideal quantum channel. Suppose further that they share many copies of a quantum state $ρ_{…
Distribution of Bell inequality violation vs. multiparty quantum correlation measures
Kunal Sharma, Tamoghna Das, Aditi Sen De +1
Violation of a Bell inequality guarantees the existence of quantum correlations in a quantum state. A pure bipartite quantum state, having nonvanishing quantum correlation, always…