235 citations · 1.6k across the 36 of their papers we have counts for
36 papers
Entangling capability of coherently controlled quantum processes
Beyza Aslanbaş, Bedirhan Alkan, Göktuğ Karpat
We analytically characterize entanglement generation by two paradigmatic coherently controlled quantum processes, the quantum switch and time-flip. Retaining rather than measuring…
Transient Dynamics and Homogenization in Incoherent Collision Models
Göktuğ Karpat, Barış Çakmak
Collision models have attracted significant attention in recent years due to their versatility to simulate open quantum systems in different dynamical regimes. They have been used…
Memory in quantum processes with indefinite time direction and causal order
Göktuğ Karpat, Barış Çakmak
We examine the emergence of dynamical memory effects in quantum processes having indefinite time direction and causal order. In particular, we focus on the class of phase-covariant…
Predicting the Onset of Quantum Synchronization Using Machine Learning
Felipe Mahlow, Barış Çakmak, Göktuğ Karpat +2
We have applied a machine learning algorithm to predict the emergence of environment-induced spontaneous synchronization between two qubits in an open system setting. In particular…
Entropy production in non-Markovian collision models: Information backflow vs system-environment correlations
Hüseyin T. Şenyaşa, Şahinde Kesgin, Göktuğ Karpat +1
We investigate the irreversible entropy production of a qubit in contact with an environment modelled by a microscopic collision model both in Markovian and non-Markovian regimes.…
Disorder-free localization in quantum walks
B. Danacı, İ. Yalçınkaya, B. Çakmak +3
The phenomenon of localization usually happens due to the existence of disorder in a medium. Nevertheless, certain quantum systems allow dynamical localization solely due to the na…
Estimating the degree of non-Markovianity using machine learning
Felipe F. Fanchini, Göktuğ Karpat, Daniel Z. Rossatto +2
In the last years, the application of machine learning methods has become increasingly relevant in different fields of physics. One of the most significant subjects in the theory o…
Synchronization and Non-Markovianity in open quantum systems
Göktuğ Karpat, İskender Yalçınkaya, Barış Çakmak +2
Detuned systems can spontaneously achieve a synchronous dynamics and display robust quantum correlations in different local and global dissipation regimes. Beyond the Markovian lim…
Quantum synchronization of few-body systems under collective dissipation
G. Karpat, İ. Yalçınkaya, B. Çakmak
We explore the environment-induced synchronization phenomenon in two-level systems in contact with a thermal dissipative environment. We first discuss the conditions under which sy…
Quantum synchronization in a collision model
G. Karpat, İ. Yalçınkaya, B. Çakmak
We reveal the emergence of environment-induced spontaneous synchronization between two spin-1/2 quantum objects in a collision model setting. In particular, we determine the condit…
Non-markovianity and bound states in quantum walks with a phase impurity
B. Danacı, G. Karpat, İ. Yalçınkaya +1
We study a quantum walker on a one-dimensional lattice with a single defect site characterized by a phase. The spread and localization of discrete-time quantum walks starting at th…
Invariant entanglement and generation of quantum correlations under global dephasing
G. Karpat
We investigate the dynamics of quantum entanglement and more general quantum correlations quantified respectively via negativity and local quantum uncertainty for two qubit systems…
Continuous dynamical decoupling and decoherence-free subspaces for qubits with tunable interaction
İ. Yalçınkaya, B. Çakmak, G. Karpat +1
Protecting quantum states from the decohering effects of the environment is of great importance for the development of quantum computation devices and quantum simulators. Here, we…
Remote polarization entanglement generation by local dephasing and frequency upconversion
S. Hamedani Raja, G. Karpat, E. -M. Laine +4
We introduce a scheme for remote entanglement generation for the photon polarization. The technique is based on transferring the initial frequency correlations to specific polariza…
Time-invariant Discord: High Temperature Limit and Initial Environmental Correlations
F. T. Tabesh, G. Karpat, S. Maniscalco +2
We present a thorough investigation of the phenomena of frozen and time-invariant quantum discord for two-qubit systems independently interacting with local reservoirs. Our work ta…
Symmetry in the open-system dynamics of quantum correlations
Henri Lyyra, Göktuğ Karpat, Chuan-Feng Li +3
We study the symmetry properties in the dynamics of quantum correlations for two-qubit systems in one-sided noisy channels, with respect to a switch in the location of noise from o…
Dynamical Memory Effects in Correlated Quantum Channels
Carole Addis, Göktuğ Karpat, Chiara Macchiavello +1
Memory effects play a fundamental role in the study of the dynamics of open quantum systems. There exist two conceptually distinct notions of memory discussed for quantum channels…
Inequivalence of Correlation-based Measures of Non-Markovianity
Alaor Cervati Neto, Göktuğ Karpat, Felipe Fernandes Fanchini
We conclusively show that the entanglement- and the mutual information-based measures of quantum non-Markovianity are inequivalent. To this aim, we first analytically solve the opt…
Time-invariant entanglement and sudden death of non-locality
Bi-Heng Liu, Xiao-Min Hu, Jiang-Shan Chen +8
We investigate both theoretically and experimentally the dynamics of entanglement and non-locality for two qubits immersed in a global pure dephasing environment. We demonstrate th…
Quantum Correlations and Coherence in Spin-1 Heisenberg Chains
A. L. Malvezzi, G. Karpat, B. Çakmak +3
We explore quantum and classical correlations along with coherence in the ground states of spin-1 Heisenberg chains, namely the one-dimensional XXZ model and the one-dimensional bi…
Time-Invariant Discord in Dynamically Decoupled Systems
Carole Addis, Göktuğ Karpat, Sabrina Maniscalco
Dynamical decoupling protocols are one of the most used tools for efficient quantum error corrections and for reservoir engineering. In this paper we study the effect of dynamical…
Controlling entropic uncertainty bound through memory effects
Göktuğ Karpat, Jyrki Piilo, Sabrina Maniscalco
One of the defining traits of quantum mechanics is the uncertainty principle which was originally expressed in terms of the standard deviation of two observables. Alternatively, it…
Factorization and Criticality in the Anisotropic XY Chain via Correlations
B. Çakmak, G. Karpat, F. F. Fanchini
In this review, we discuss the zero and finite temperature behavior of various bipartite quantum and total correlation measures, the skew information-based quantum coherence, and t…
Non-Markovianity through flow of information between a system and an environment
S. Haseli, G. Karpat, S. Salimi +6
Exchange of information between a quantum system and its surrounding environment plays a fundamental role in the study of the dynamics of open quantum systems. Here we discuss the…