171 citations · 571 across the 18 of their papers we have counts for
19 papers · 1 filter
Multinegativity and single-letter formulas for asymptotic entanglement
Raphael Brinster, Tulja Varun Kondra, Hermann Kampermann +2
The study of entanglement inevitably leads to the concept of regularization, where measures are evaluated on infinitely many copies of a state. Single-letter formulas try to make t…
Sharp Quantum Capacity Thresholds: Exponential Strong Converses for Degradable and Antidegradable Channels
Tulja Varun Kondra, Raphael Brinster, Hermann Kampermann +2
The quantum capacity of a noisy channel quantifies the maximum rate at which quantum information can be transmitted reliably. For general channels, its evaluation requires an optim…
Very Strong Irreversibility of Quantum Entanglement
Tulja Varun Kondra, Raphael Brinster, Hermann Kampermann +2
The manipulation of quantum entanglement is fundamentally irreversible: some mixed entangled states require pure entanglement for their preparation, although no pure entanglement c…
Fundamental limitations on entanglement extraction from purity
Tulja Varun Kondra, Pedro Barrios Hita, Justus Neumann +2
States of sufficiently low purity are separable and cannot be entangled by unital (purity-non-generating) operations. Since high-purity states are experimentally demanding, it is n…
Optimality of universal conclusive entanglement concentration protocols
Alexandre C. Orthey, Aby Philip, Tulja Varun Kondra +1
Entanglement concentration is essential for quantum technologies, yet rigorous bounds on the success probability for universal protocols (those requiring no prior knowledge about t…
No quantum advantage without classical communication: fundamental limitations of quantum networks
Justus Neumann, Tulja Varun Kondra, Kiara Hansenne +5
Quantum networks connect systems at separate locations via quantum links, enabling a wide range of quantum information tasks between distant parties. Large-scale networks have the…
Second Law of Entanglement Manipulation with Entanglement Battery
Ray Ganardi, Tulja Varun Kondra, Nelly H. Y. Ng +1
A central question since the beginning of quantum information science is how two distant parties can convert one entangled state into another. It has been conjectured that such con…
Coherence manipulation in asymmetry and thermodynamics
Tulja Varun Kondra, Ray Ganardi, Alexander Streltsov
In the classical regime, thermodynamic state transformations are governed by the free energy. This is also called as the second law of thermodynamics. Previous works showed that, a…
Catalytic and asymptotic equivalence for quantum entanglement
Ray Ganardi, Tulja Varun Kondra, Alexander Streltsov
Entanglement is a fundamental resource in quantum information processing, yet understanding its manipulation and transformation remains a challenge. Many tasks rely on highly entan…
Resource Theory of Imaginarity: New Distributed Scenarios
Kang-Da Wu, Tulja Varun Kondra, Carlo Maria Scandolo +5
The resource theory of imaginarity studies the operational value of imaginary parts in quantum states, operations, and measurements. Here we introduce and study the distillation an…
Is there a finite complete set of monotones in any quantum resource theory?
Chandan Datta, Ray Ganardi, Tulja Varun Kondra +1
Entanglement quantification aims to assess the value of quantum states for quantum information processing tasks. A closely related problem is state convertibility, asking whether t…
Real quantum operations and state transformations
Tulja Varun Kondra, Chandan Datta, Alexander Streltsov
Resource theory of imaginarity provides a useful framework to understand the role of complex numbers, which are essential in the formulation of quantum mechanics, in a mathematical…
Catalysis of entanglement and other quantum resources
Chandan Datta, Tulja Varun Kondra, Marek Miller +1
In chemistry, a catalyst is a substance which enables a chemical reaction or increases its rate, while remaining unchanged in the process. Instead of chemical reactions, quantum ca…
Entanglement and coherence in Bernstein-Vazirani algorithm
Moein Naseri, Tulja Varun Kondra, Suchetana Goswami +2
Quantum algorithms allow to outperform their classical counterparts in various tasks, most prominent example being Shor's algorithm for efficient prime factorization on a quantum c…
Entanglement catalysis for quantum states and noisy channels
Chandan Datta, Tulja Varun Kondra, Marek Miller +1
Many applications of the emerging quantum technologies, such as quantum teleportation and quantum key distribution, require singlets, maximally entangled states of two quantum bits…
Stochastic approximate state conversion for entanglement and general quantum resource theories
Tulja Varun Kondra, Chandan Datta, Alexander Streltsov
Quantum resource theories provide a mathematically rigorous way of understanding the nature of various quantum resources. An important problem in any quantum resource theory is to…
Resource theory of imaginarity: Quantification and state conversion
Kang-Da Wu, Tulja Varun Kondra, Swapan Rana +5
Complex numbers are widely used in both classical and quantum physics, and are indispensable components for describing quantum systems and their dynamical behavior. Recently, the r…
Catalytic Transformations of Pure Entangled States
Tulja Varun Kondra, Chandan Datta, Alexander Streltsov
Quantum entanglement of pure states is usually quantified via the entanglement entropy, the von Neumann entropy of the reduced state. Entanglement entropy is closely related to ent…
Operational Resource Theory of Imaginarity
Kang-Da Wu, Tulja Varun Kondra, Swapan Rana +5
Wave-particle duality is one of the basic features of quantum mechanics, giving rise to the use of complex numbers in describing states of quantum systems, their dynamics, and inte…