10 citations · 30 across the 16 of their papers we have counts for
16 papers
Towards fault-tolerance with universal phase-error-transparent gates for high-spin cat codes
Kelvin Onggadinata, Si Yan Koh, Arghya Maity +5
High-dimensional nuclear spins offer a hardware-efficient route to quantum error correction (QEC), with the spin cat code providing intrinsic robustness against phase errors -- the…
Exact Tradeoff Between Quantum Error Correction and Quantum Darwinism: An Information-Theoretic No-Go Theorem
Arghya Maity, Kelvin Onggadinata, Teck Seng Koh
Quantum error correction (QEC) and Quantum Darwinism describe opposing consequences of system-environment interactions: QEC seeks to preserve logical quantum information, whereas Q…
Simultaneous High-Fidelity Readout and Strong Coupling for a Donor-Based Spin Qubit
Si Yan Koh, Weifan Wu, Kelvin Onggadinata +7
Superconducting resonators coupled to solid-state qubits offer a scalable architecture for long-range entangling operations and fast, high-fidelity readout. Realizing this requires…
Non-Markovian and Thermodynamic Signatures in the Classicality Assessment via Kolmogorov Consistency
Arghya Maity, Ahana Ghoshal, Kelvin Onggadinata +1
The Kolmogorov consistency condition (KCC) defines the statistical boundary between classical and quantum dynamics. Its violation signifies the breakdown of a classical Markov desc…
High-fidelity regimes of resonator-mediated controlled-Z gates between quantum-dot qubits
Guangzhao Yang, Marek Gluza, Si Yan Koh +6
Semiconductor double quantum dot (DQD) qubits coupled via superconducting microwave resonators provide a powerful means of long-range manipulation of the qubits' spin and charge de…
Efficient measure of information backflow with a quasistochastic process
Kelvin Onggadinata, Teck Seng Koh
Characterization and quantification of non-Markovian dynamics in open quantum systems are topical issues in the rapidly developing field of quantum computation and quantum communic…
Ideal stochastic process modeling with post-quantum quasiprobabilistic theories
Kelvin Onggadinata, Andrew Tanggara, Mile Gu +1
In stochastic modeling, the excess entropy -- the mutual information shared between a process's past and future -- represents the fundamental lower bound of the memory needed to si…
Quasi-probabilistic Bit Erasure Causes Bell Non-locality
Kelvin Onggadinata, Pawel Kurzynski, Dagomir Kaszlikowski
We show that a maximal violation of the Bell-CHSH inequality for two entangled qubits, i.e., Bell non-locality, is a direct consequence of a local bit erasure by means of a quasi-s…
Communication Cost in Simulating Unknown Entangled States
Kelvin Onggadinata, Pawel Kurzynski, Dagomir Kaszlikowski
We demonstrate how to universally simulate ensemble statistics of projective local measurements on any -qubit state shared among observers with classical communication and s…
Non-classicality Primitive in a Quasi-probabilistic Toy Model
Kelvin Onggadinata, Pawel Kurzynski, Dagomir Kaszlikowski
We demonstrate a basic non-classical effect in a quasi-probabilistic toy model with local Alice and Bob who share classical randomness. Our scenario differs from the orthodox demon…
Operational approach to bilocality with joint probability distributions
Kelvin Onggadinata, Pawel Kurzynski, Dagomir Kaszlikowski
We show an operational approach to bilocality with quasi-probability distributions and quasi-stochastic processes. This approach clearly demonstrates that negative probabilities ar…
Quantum Bayesian Inference in Quasiprobability Representations
Clive Cenxin Aw, Kelvin Onggadinata, Dagomir Kaszlikowski +1
Bayes' rule plays a crucial piece of logical inference in information and physical sciences alike. Its extension into the quantum regime has been the object of several recent works…
Reexamination of the Kochen-Specker theorem: Relaxation of the completeness assumption
Kelvin Onggadinata, Dagomir Kaszlikowski, Pawel Kurzynski
The Kochen-Specker theorem states that exclusive and complete deterministic outcome assignments are impossible for certain sets of measurements, called Kochen-Specker (KS) sets. A…
Qubit from the classical collision entropy
Kelvin Onggadinata, Pawel Kurzynski, Dagomir Kaszlikowski
An orthodox formulation of quantum mechanics relies on a set of postulates in Hilbert space supplemented with rules to connect it with classical mechanics such as quantisation tech…
Simulations of quantum nonlocality with local negative bits
Kelvin Onggadinata, Pawel Kurzynski, Dagomir Kaszlikowski
We propose a simple simulation of nonlocal quantum correlations among qubits using a local hidden variable source with a positive probability distribution, given that each the…
Dark energy effects in the Schrödinger-Newton approach
Kelvin, Kelvin Onggadinata, Matthew J. Lake +1
The Schrödinger-Newton equation is a proposed model to explain the localization of macroscopic particles by suppressing quantum dispersion with the particle's own gravitational att…