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Quantum Supremacy: What’s Next After Google's Milestone?

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  Introduction In 2019, Google announced that it had achieved a milestone in quantum computing known as "quantum supremacy." Their quantum processor, Sycamore, performed a complex computation in 200 seconds that would take the most powerful classical supercomputers thousands of years to complete. This breakthrough marked a significant moment in the history of quantum computing. But, what comes next? Let’s explore the future after Google's achievement and what lies ahead for the quantum revolution. A Quick Recap: What is Quantum Supremacy? Quantum supremacy refers to the point at which a quantum computer can perform a calculation that is practically impossible for classical computers. It doesn't mean quantum computers are immediately more useful for all tasks—it’s more of a proof-of-concept to show that quantum machines can outperform classical systems on specific problems. Google’s achievement was a landmark, but it was also narrow in scope. The task solved by Sycamor...

Entanglement Concentration of Multi-Qubit Entangled States: An IBM Quantum Experience

  Introduction In the realm of quantum computing, entanglement plays a crucial role as a resource for various quantum information processing tasks. The entanglement concentration protocols are designed to convert partially entangled states into maximally entangled states, thereby enhancing their utility. This blog delves into a recent research work that applies these protocols to subsets of highly entangled multi-qubit states created on the IBM quantum computer. Research Overview Link to Research Paper: Entanglement Concentration of Multi-Qubit Entangled States In this study, the researchers focused on highly entangled multi-qubit states such as Z-states and cluster states. These states are pivotal in measurement-based quantum computation models. The goal was to apply entanglement concentration protocols to these states and analyze the success of the protocol by calculating the success probability. Methodology The researchers utilized the IBM quantum computer and its simulator to ...