Strong converses

Does general finite-dimensional i.i.d.

• Quantum Communication
• Quantum source coding
• Strong converses

Does every finite-dimensional transpose-degradable channel satisfy an exponential strong converse for quantum communication at its single-letter quantum capacity?

• Quantum Communication
• Quantum capacity
• Channel degradability
• Strong converses

Let \(\mathcal N,\mathcal M:\mathcal L(A)\to\mathcal L(B)\) be quantum channels on finite-dimensional systems.

• Quantum metrology
• Quantum Communication
• Channel discrimination
• Quantum hypothesis testing
• Quantum relative entropy
• Strong converses