The publishing giant Condé Nast has been talking to the Port Authority of New York and New Jersey about moving to 1 World Trade Center when it is completed, a potential coup for the signature skyscraper rising at ground zero.

According to real estate executives who spoke on the condition of anonymity because the talks were secret, the publisher would take up as much as one million square feet in what is planned to be the country’s tallest office tower, a symbolic 1,776 feet.

So far, the only tenants are government offices and a Chinese real estate company. Condé Nast, which established Times Square as a hip and resurgent area when it moved into 4 Times Square in 1999, would be an entirely different matter, bringing its particular cachet downtown.

Image A 2006 rendering of the Freedom Tower. It is now known as 1 World Trade Center. Credit... Skidmore, Owings & Merrill

“It’s the perfect place for them,” said Elizabeth H. Berger, president of the Alliance for Downtown New York. “The lunch crowd will be very well dressed. And where else can you go to Tiffany and Century 21 on your lunch hour?