560 citations · 2.9k across the 43 of their papers we have counts for
43 papers
Gravity mediated entanglement between light beams as a table-top test of quantum gravity
Stefan Aimet, Hadrien Chevalier, M. S. Kim
Over the past century, a large community within theoretical physics has been seeking a unified framework for quantum gravity. Yet, to date, there is still no experimental evidence…
Scalable and Programmable Phononic Network with Trapped Ions
Wentao Chen, Yao Lu, Shuaining Zhang +9
Controllable bosonic systems can provide post-classical computational power with sub-universal quantum computational capability. A network that consists of a number of bosons evolv…
Clifford Circuit Initialisation for Variational Quantum Algorithms
M. H. Cheng, K. E. Khosla, C. N. Self +4
We present an initialisation method for variational quantum algorithms applicable to intermediate scale quantum computers. The method uses simulated annealing of the efficiently si…
Unifying Sørensen-Mølmer gate and Milburn gate with an optomechanical example
Yue Ma, Manuel C. C. Pace, M. S. Kim
Sørensen-Mølmer gate and Milburn gate are two geometric phase gates, generating nonlinear self-interaction of a target mode via its interaction with an auxiliary mechanical mode, i…
Scalable measures of magic resource for quantum computers
Tobias Haug, M. S. Kim
Non-stabilizerness or magic resource characterizes the amount of non-Clifford operations needed to prepare quantum states. It is a crucial resource for quantum computing and a nece…
Fault-tolerance in qudit circuit design
Michael Hanks, M. S. Kim
The efficient decomposition of multi-controlled gates is a significant factor in quantum compiling, both in circuit depth and T-gate count. Recent work has demonstrated that qudits…
Faster Born probability estimation via gate merging and frame optimisation
Nikolaos Koukoulekidis, Hyukjoon Kwon, Hyejung H. Jee +2
Outcome probability estimation via classical methods is an important task for validating quantum computing devices. Outcome probabilities of any quantum circuit can be estimated us…
Noise thresholds for classical simulability of non-linear Boson sampling
Gabriele Bressanini, Hyukjoon Kwon, M. S. Kim
Boson sampling, a computational problem conjectured to be hard to simulate on a classical machine, is a promising candidate for an experimental demonstration of quantum advantage u…
Generating Haar-uniform Randomness using Stochastic Quantum Walks on a Photonic Chip
Hao Tang, Leonardo Banchi, Tian-Yu Wang +9
As random operations for quantum systems are intensively used in various quantum information tasks, a trustworthy measure of the randomness in quantum operations is highly demanded…
Many-body probes for quantum features of spacetime
Hadrien Chevalier, Hyukjoon Kwon, Kiran E. Khosla +2
Many theories of quantum gravity can be understood as imposing a minimum length scale the signatures of which can potentially be seen in precise table top experiments. In this work…
Limits on inference of gravitational entanglement
Yue Ma, Thomas Guff, Gavin Morley +2
Combining gravity with quantum mechanics remains one of the biggest challenges of physics. In the past years, experiments with opto-mechanical systems have been proposed that may g…
Natural parameterized quantum circuit
Tobias Haug, M. S. Kim
Noisy intermediate scale quantum computers are useful for various tasks such as state preparation and variational quantum algorithms. However, the non-Euclidean quantum geometry of…
Measuring the joint spectral mode of photon pairs using intensity interferometry
G. S. Thekkadath, B. A. Bell, R. B. Patel +2
The ability to manipulate and measure the time-frequency structure of quantum light is useful for information processing and metrology. Measuring this structure is also important w…
Qubit Readout Error Mitigation with Bit-flip Averaging
Alistair W. R. Smith, Kiran E. Khosla, Chris N. Self +1
Quantum computers are becoming increasingly accessible, and may soon outperform classical computers for useful tasks. However, qubit readout errors remain a significant hurdle to r…
Capacity and quantum geometry of parametrized quantum circuits
Tobias Haug, Kishor Bharti, M. S. Kim
To harness the potential of noisy intermediate-scale quantum devices, it is paramount to find the best type of circuits to run hybrid quantum-classical algorithms. Key candidates a…
Efficient Quantum State Sample Tomography with Basis-dependent Neural-networks
Alistair W. R. Smith, Johnnie Gray, M. S. Kim
We use a meta-learning neural-network approach to analyse data from a measured quantum state. Once our neural network has been trained it can be used to efficiently sample measurem…
Relative Acceleration Noise Mitigation for Nanocrystal Matter-wave Interferometry: Application to Entangling Masses via Quantum Gravity
Marko Toroš, Thomas W. van de Kamp, Ryan J. Marshman +3
Matter wave interferometers with large momentum transfers, irrespective of specific implementations, will face a universal dephasing due to relative accelerations between the inter…
Experimental Realisation of a Thermal Squeezed State of Levitated Optomechanics
Muddassar Rashid, Tommaso Tufarelli, James Bateman +4
We experimentally squeeze the thermal motional state of an optically levitated nanosphere, by fast switching between two trapping frequencies. The measured phase space distribution…
NonClassicality Criteria in Multiport Interferometry
Luca Rigovacca, Carlo Di Franco, Benjamin J. Metcalf +2
Interference lies at the heart of the behavior of classical and quantum light. It is thus crucial to understand the boundaries between which interference patterns can be explained…
Free Nano-Object Ramsey Interferometry for Large Quantum Superpositions
C. Wan, M. Scala, G. W. Morley +6
We propose an interferometric scheme based on an untrapped nano-object subjected to gravity. The motion of the center of mass (c.m.) of the free object is coupled to its internal s…
Burning and graphitization of optically levitated nanodiamonds in vacuum
A. T. M. A. Rahman, A. Frangeskou, M. S. Kim +3
A nitrogen-vacancy (NV) center in a nanodiamond, levitated in high vacuum, has recently been proposed as a probe for demonstrating mesoscopic center-of-mass superpositions \cit…
Photonic Maxwell's demon
Mihai D. Vidrighin, Oscar Dahlsten, Marco Barbieri +3
We report an experimental realisation of Maxwell's demon in a photonic setup. We show that a measurement at the single-photon level followed by a feed-forward operation allows the…
Tolerance in the Ramsey interference of a trapped nanodiamond
C. Wan, M. Scala, S. Bose +5
The scheme recently proposed in [M. Scala et al., Phys Rev Lett 111, 180403 (2013)], where a gravity-dependent phase shift is induced on the spin of a nitrogen-vacancy (NV) center…
Realization of near-deterministic arithmetic operations and quantum state engineering
Mark Um, Junhua Zhang, Dingshun Lv +6
Quantum theory is based on a mathematical structure totally different from conventional arithmetic. Due to the symmetric nature of bosonic particles, annihilation or creation of si…