Compiler for Color Center-based Quantum Computers

Quantum computing is a promising means of satisfying the ever-increasing need for more and faster computations. While some specific applications can already benefit from quantum computing today, a large-scale general-purpose quantum computer is yet to be developed. Many different technologies are being explored to reach this goal, color centers...

Quantum simulator for electronical control of diamond spin qubits

The world of quantum computing is still quickly developing and growing as it is searching for the best technology to implement quantum bits. One of these technologies is a diamond-based quantum computer using nitrogen-vacancy (NV) centers. In order to sustain the mentioned growth, the limits of electronics as well as computer engineering need to...

Information-theoretic quantities of quantum channels with partition quantum group symmetries

In the field of quantum information theory, it is well-known that the purely quantum phenomenon called quantum entanglement can boost the capacity of a quantum channel, which is called the superadditivity of the capacity. Shor showed in his breakthrough paper on the equivalence of additivity conjectures that this superadditivity is equivalent to...

Integration and Collaboration in the Development of Quantum Technology: Development of the Physical Layer of a Quantum Network Stack integrated with the Link Layer - A Vision on University-Industry Collaborations in the Field of Quantum Technology Development

Throughout the work, the goal was to develop the physical layer of a quantum network stack. The layer of the network stack connected to the physical layer is the link layer. For entanglement-based quantum networks, we demonstrated the successful operation of a link layer and a physical layer. The physical layer’s entanglement generation...

Integrated entangling gates: Creating GHZ States for Stabilizer Measurements in Distributed Quantum Computing

High fidelity GHZ states among remote nodes is a precious commodity which can allow for non-local stabilizer measurements and thus pave the way for a modular fault-tolerant quantum computer. To this end, we extend the high fidelity intracavity gate introduced by Borregaard et al. (2015) to distributed paradigm, consisting of SnV-inspired atomic...

Data Origin Authentication And The Classical Data Plane of A Quantum Network Link

Quantum networks allow multiple devices to exchange information encoded within quantum systems.<br/>Such quantum networks use classical control messages to coordinate entanglement between nodes.<br/>Third parties which can forge such control messages may interfere with the workings of quantum links, however:<br/>They may either perform...

QuTAF: A Test Automation Framework for Quantum Applications

The testing of quantum applications can be approached from three perspectives. The first one concerns the certification of the accuracy of the quantum device where the application is run. The second one has to do with the classical verification of the result output by the application. Yet a third one addresses the problem from the software...

Geometry and Reconstruction of Bipartite Quantum Correlations

The first part of this thesis provides a mathematical description for bipartite quantum correlations, aiming to analyze the geometry of several sets of correlations. We explain why quantum entanglement can be used to simulate shared randomness: C_loc(Γ) ⊆ C_q^d(Γ) for a sufficiently large d. The known bound for this...

A Critique of Topos Logic in Measurement-Based Quantum Computation

Topos theory and quantum mechanics are both known for having a logic that is different from ordinary logic. With this in mind, much work has been done on unifying these two fields. Loveridge, Dridi and Raussendorf apply this unification to measurement-based quantum computation [14], revealing links between computation, contextuality and the...