Multicasting in Quantum Switching Networks

—In this paper, we present a quantum multicasting network, called a generalized quantum connector (n-GQC), which can be used to multicast quantum information from n inputs to n outputs. This network is recursively constructed using n=2-GQCs and consists of Oðn log2 nÞ quantum gates. The key component of the n-GQC is another network, called an n-quantum concentrator (n-QC). This concentrator is also an n  n quantum network, and can route arbitrary quantum states on any m of its inputs to its top m outputs, for any m; 1 m n. Its quantum gate complexity is Oðn log nÞ. The quantum gate-level depths of n-QC and n-GQC are Oðlog2 nÞ and Oðlog3 nÞ, respectively. Both n-QC and n-GQC are based on the classical self-routing concentrators and generalized connection networks given by Lee and Oruc¸ [1]. While these networks work for multicasting classical packets, they cannot be used to multicast quantum packets as they employ balancer switches with both forward and backward propagation...

• Type: Journal
• Year: 2010
• Where: TC
• Authors: Manish Kumar Shukla, A. Yavuz Oruç
• Keywords: Generalized Quantum Connector, Information Technology, Quantum, Quantum Gate-level Depths, TC 2010