no code implementations • 6 Jul 2022 • Abhinav Anand, Jakob S. Kottmann, Alán Aspuru-Guzik
As we continue to find applications where the currently available noisy devices exhibit an advantage over their classical counterparts, the efficient use of quantum resources is highly desirable.
no code implementations • 12 Aug 2021 • Abhinav Anand, Chandra R. Murthy
Motivated by this, we consider a general subcarrier allocation scheme and derive expressions for the ICI power, uplink signal to interference plus noise ratio and the achievable uplink sum-rate, taking into account the ICI and the multi-user interference due to channel aging.
no code implementations • 21 Jan 2021 • Kishor Bharti, Alba Cervera-Lierta, Thi Ha Kyaw, Tobias Haug, Sumner Alperin-Lea, Abhinav Anand, Matthias Degroote, Hermanni Heimonen, Jakob S. Kottmann, Tim Menke, Wai-Keong Mok, Sukin Sim, Leong-Chuan Kwek, Alán Aspuru-Guzik
We additionally provide a comprehensive overview of various benchmarking and software tools useful for programming and testing NISQ devices.
no code implementations • 30 Nov 2020 • Abhinav Anand, Matthias Degroote, Alán Aspuru-Guzik
We implement two specific approaches, the exponential and separable natural evolutionary strategies, for parameter optimization of PQCs and compare them against standard gradient descent.
1 code implementation • 11 Nov 2020 • Jakob S. Kottmann, Abhinav Anand, Alán Aspuru-Guzik
We show that, within our framework, the gradient of an expectation value with respect to a parameterized n-fold fermionic excitation can be evaluated by four expectation values of similar form and size, whereas most standard approaches based on the direct application of the parameter-shift-rule come with an associated cost of O(2^(2n)) expectation values.
Quantum Physics Chemical Physics Computational Physics
4 code implementations • 5 Nov 2020 • Jakob S. Kottmann, Sumner Alperin-Lea, Teresa Tamayo-Mendoza, Alba Cervera-Lierta, Cyrille Lavigne, Tzu-Ching Yen, Vladyslav Verteletskyi, Philipp Schleich, Abhinav Anand, Matthias Degroote, Skylar Chaney, Maha Kesibi, Artur F. Izmaylov, Alán Aspuru-Guzik
As in classical computing, heuristics play a crucial role in the development of new quantum algorithms, resulting in high demand for flexible and reliable ways to implement, test, and share new ideas.
Quantum Physics Chemical Physics Computational Physics
no code implementations • 2 Jun 2020 • Abhinav Anand, Jonathan Romero, Matthias Degroote, Alán Aspuru-Guzik
In this paper, we employ a hybrid architecture for quantum generative adversarial networks (QGANs) and study their robustness in the presence of noise.
no code implementations • ICML 2018 • Abhishek Bansal, Abhinav Anand, Chiranjib Bhattacharyya
Understanding the representational power of Restricted Boltzmann Machines (RBMs) with multiple layers is an ill-understood problem and is an area of active research.